660+ A Level Physics Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .

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301.	1 V is equal to {{}}
A.	1 J C-1
B.	2 J C-1
C.	1 J-1 C
D.	2 J-1 C
Answer» A. 1 J C-1

discuss

302.	Ideal resistance of ammeter is
A.	1 Ω
B.	2 Ω
C.	0 Ω
D.	infinite
Answer» C. 0 Ω

discuss

303.	Density of water in kg m-3 is {{}}
A.	1000
B.	100
C.	10 000
D.	4000
Answer» A. 1000

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304.	Normal force acting per unit cross sectional area is called
A.	weight
B.	pressure
C.	volume
D.	friction
Answer» B. pressure

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305.	Ratio of tensile to strain is
A.	Young's modulus
B.	stress
C.	stiffness
D.	tensile force
Answer» A. Young's modulus

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306.	Gradient of force-extension graph is
A.	variable
B.	increasing
C.	decreasing
D.	force constant
Answer» D. force constant

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307.	Energy in deformed solid is called
A.	stress energy
B.	potential energy
C.	kinetic energy
D.	strain energy
Answer» D. strain energy

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308.	Units of stress are
A.	Newton
B.	Joules
C.	Pascal
D.	Watt
Answer» C. Pascal

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309.	Concentration of matter in a material is
A.	volume
B.	mass
C.	density
D.	weight
Answer» C. density

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310.	Units of strain are
A.	Newton
B.	Joules
C.	Watt
D.	no units
Answer» D. no units

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311.	Stress is force applied on
A.	volume
B.	cross sectional area
C.	unit length
D.	across diagonal
Answer» B. cross sectional area

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312.	The larger the spring constant, the spring would be more
A.	extensible
B.	stiffer
C.	compressive
D.	brittle
Answer» B. stiffer

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313.	Height of atmosphere, if atmospheric density is 1.29 kg m-3 and atmospheric pressure is 101 kPa, is {{}}
A.	7839.4 m
B.	7829.4 m
C.	7849.4 m
D.	7859.4 m
Answer» B. 7829.4 m

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314.	Pressure in fluid depends upon
A.	depth below the surface
B.	density of fluid
C.	the value of g
D.	all of above
Answer» D. all of above

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315.	As depth increases, pressure in a fluid
A.	increases
B.	decreases
C.	remains constant
D.	varies
Answer» A. increases

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316.	If extension in spring is proportional to load applied, then material obeys
A.	Newton's law
B.	gravitational law
C.	Charles's law
D.	Hooke's law
Answer» D. Hooke's law

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317.	If a spring is squashed, then forces are
A.	extensible
B.	compressive
C.	normal
D.	abnormal
Answer» B. compressive

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318.	Fractional increase in original length is called
A.	stress
B.	strain
C.	tensile force
D.	compression
Answer» B. strain

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319.	If a force of 50 N is applied across the cross-sectional area of 5 × 10 - 7m2 then stress applied on it is {{}}
A.	1 × 10 8 Pa
B.	20 Pa
C.	50 Pa
D.	100 Pa
Answer» A. 1 × 10 8 Pa

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320.	Mass of steel sphere having density 7850 kg m-3 and radius 0.15 m is
A.	112 kg
B.	290 kg
C.	110.9 kg
D.	300 kg
Answer» C. 110.9 kg

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321.	In a force-extension graph, force is taken along horizontal axis because
A.	force is independent variable
B.	extension is independent variable
C.	force is dependent variable
D.	all of above
Answer» A. force is independent variable

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322.	Extension and applied force are
A.	directly proportional
B.	inversely proportional
C.	are independent of each other
D.	inversely related
Answer» A. directly proportional

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323.	1 Pa is equal to
A.	1N m
B.	1 kg
C.	1 N m-1
D.	1 N m-2
Answer» D. 1 N m-2

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324.	Spring constant of spring is also called
A.	gradient
B.	tensile forces
C.	stiffness
D.	compression
Answer» C. stiffness

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325.	Tensile strain is equal to
A.	Force per unit area
B.	Force per unit volume
C.	Extension per unit length
D.	Force per unit length
Answer» C. Extension per unit length

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326.	In elastic collisions,
A.	only the total momentum of the colliding objects is conserved.
B.	only the total kinetic energy is conserved.
C.	both of the momentum and total kinetic energy are conserved.
D.	neither momentum of the colliding bodies nor the total kinetic energy are
Answer» C. both of the momentum and total kinetic energy are conserved.

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327.	Total angular momentum of a body is given by
A.	I × ω; where I: moment of inertia of the body, ω: angular velocity
B.	I² × ω; where I: moment of inertia of the body, ω: angular velocity
C.	I² × ω²; where I: moment of inertia of the body, ω: angular velocity
D.	I × ω²; where I: moment of inertia of the body, ω: angular velocity
Answer» A. I × ω; where I: moment of inertia of the body, ω: angular velocity

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328.	Force that acts on a mass of 1 g and gives it an acceleration of 1 cm s -2 is defined as {{}}
A.	1 newton
B.	1 dyne
C.	1 pound-force
D.	1 pa-force
Answer» B. 1 dyne

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329.	An object moving in a circle of radius ‘r’ with a constant speed ‘v’ has a constant acceleration towards the center equal to
A.	v²⁄r
B.	v⁄r
C.	v²×r
D.	v×r
Answer» A. v²⁄r

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330.	Einstein's mass-energy relationship states that if the mass decreases by Δm, the energy released ΔE is given by {{}}
A.	ΔE = Δm × c, where "c" denotes the speed of light.
B.	ΔE = Δm × c², where "c" denotes the speed of light.
C.	ΔE = Δm ⁄ c, where "c" denotes the speed of light.
D.	ΔE = Δm ⁄ c², where "c" denotes the speed of light.
Answer» B. ΔE = Δm × c², where "c" denotes the speed of light.

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331.	Bernoulli's principle states that, for streamline motion of an incompressible non-viscous fluid:
A.	the pressure at any part + the kinetic energy per unit volume = constant
B.	the kinetic energy per unit volume + the potential energy per unit volume = constant
C.	the pressure at any part + the potential energy per unit volume = constant
D.	the pressure at any part + the kinetic energy per unit volume + the potential energy per unit volume = constant
Answer» D. the pressure at any part + the kinetic energy per unit volume + the potential energy per unit volume = constant

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332.	While Young's modulus ‘E’ relates to change in length and bulk modulus ‘K’ relates to change in volume, modulus of rigidity ‘G’ relates to change in:
A.	weight
B.	density
C.	shape
D.	temperature
Answer» C. shape

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333.	Young's modulus is defined as
A.	tensile strain/tensile stress
B.	tensile stress/tensile strain
C.	tensile stress × tensile strain
D.	length/area
Answer» B. tensile stress/tensile strain

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334.	Velocity of escape is equal to
A.	r × √(2g); where r: radius of Earth or any other planet for that matter, g: gravitational field strength
B.	g × √(2r); where r: radius of Earth or any other planet for that matter, g: gravitational field strength
C.	√(2g) ⁄ r; where r: radius of Earth or any other planet for that matter, g: gravitational field strength
D.	√(2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength
Answer» D. √(2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength

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335.	Speed ‘v’ with which wave travels through a medium is given by
A.	modulus of elasticity/density of the medium
B.	modulus of elasticity/√(density of the medium
C.	√(modulus of elasticity/density of the medium
D.	v=d/t
Answer» C. √(modulus of elasticity/density of the medium

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336.	Hooke's law states that
A.	the extension is proportional to the load when the elastic limit is not exceeded
B.	the extension is inversely proportional to the load when the elastic limit is not exceeded
C.	the extension is independent of the load when the elastic limit is not exceeded
D.	load is dependent on extension
Answer» A. the extension is proportional to the load when the elastic limit is not exceeded

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337.	Dimensions of strain are {{}}
A.	[L]
B.	[M] [L]-1[T]-2
C.	[L]-1
D.	It's a dimensionless quantity
Answer» D. It's a dimensionless quantity

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338.	Due to energy dissipation by viscous forces in air, if simple harmonic variations of a pendulum die away after some time, then oscillation is said to be:
A.	undamped
B.	free
C.	damped
D.	dependent
Answer» C. damped

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339.	At ‘yield point’ of a copper wire
A.	the load hasn't exceeded the elastic limit yet; so, Hooke's law applies
B.	the load has already exceeded the elastic limit and the material has become plastic
C.	even the plastic stage has passed and the wire has snapped already
D.	Like Brass and Bronze, Copper has no yield point
Answer» B. the load has already exceeded the elastic limit and the material has become plastic

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340.	Stationary waves are also called
A.	static waves
B.	standing waves
C.	progressive waves
D.	All of the above
Answer» B. standing waves

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341.	When the work done in moving a particle round a closed loop in a field is zero, the forces in the field are called
A.	Zero forces
B.	Non-Conservative forces
C.	Conservative forces
D.	Viscous forces
Answer» C. Conservative forces

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342.	Substances that elongate considerably and undergo plastic deformation before they break are known as
A.	brittle substances
B.	breakable substances
C.	ductile substances
D.	elastic substances
Answer» C. ductile substances

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343.	1 torr is equal to
A.	1 N⁄m²
B.	1 mm Hg
C.	1 bar
D.	All of the above
Answer» B. 1 mm Hg

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344.	Velocity of sound waves through any material depends on
A.	the material's density ‘d’ only
B.	the material's density ‘d’ as well as its modulus of elasticity ‘E’
C.	the material's modulus of elasticity ‘E’ only
D.	neither the material's density ‘d’ nor its modulus of elasticity ‘E’
Answer» B. the material's density ‘d’ as well as its modulus of elasticity ‘E’

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345.	Period of simple harmonic motion of a spiral spring or elastic thread is given by
A.	T = 2π × (extension produced/gravitational field strength
B.	T = 2π × (extension produced/√(gravitational field strength
C.	T = 2π × (√(extension produced)/gravitational field strength
D.	T = 2π × √(extension produced/gravitational field strength
Answer» D. T = 2π × √(extension produced/gravitational field strength

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346.	In order to slip one surface over another, maximum frictional force has to be overcome, this maximum frictional force between the two surfaces is also known as
A.	kinetic frictional force
B.	maximal frictional force
C.	limiting frictional force
D.	resisting force
Answer» C. limiting frictional force

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347.	Van der Waals derived an expression for the ‘pressure defect’, if the observed pressure is denoted as ‘p’ and volume is denoted as ‘V’, the gas pressure in the bulk of the gas is equal to:
A.	p + a/V; where a: constant for the particular gas
B.	p + a/(V²); where a: constant for the particular gas
C.	p + (a × V); where a: constant for the particular gas
D.	p + (a × V²); where a: constant for the particular gas
Answer» B. p + a/(V²); where a: constant for the particular gas

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348.	"Upthrust = Weight of the liquid displaced" is known as
A.	Bernoulli's Principle
B.	Archimedes' Principle
C.	Pascal's Law
D.	Coulomb's law
Answer» B. Archimedes' Principle

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349.	Assuming uniform density of the core, the acceleration due to gravity below the Earth's surface is
A.	inversely proportional to the square of the distance from the center of the Earth
B.	inversely proportional to the distance from the center of the Earth
C.	directly proportional to the square of the distance from the center of the Earth
D.	directly proportional to the distance from the center of the Earth
Answer» D. directly proportional to the distance from the center of the Earth

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350.	When a gas or a liquid is subjected to an increased pressure, the substance contracts, the bulk strain is defined as
A.	final volume ⁄ original volume
B.	final pressure ⁄ original pressure
C.	change in volume ⁄ original volume
D.	original volume ⁄ change in volume
Answer» C. change in volume ⁄ original volume

discuss

660+ A Level Physics Solved MCQs

1 V is equal to {{}}

Ideal resistance of ammeter is

Density of water in kg m-3 is {{}}

Normal force acting per unit cross sectional area is called

Ratio of tensile to strain is

Gradient of force-extension graph is

Energy in deformed solid is called

Units of stress are

Concentration of matter in a material is

Units of strain are

Stress is force applied on

The larger the spring constant, the spring would be more

Height of atmosphere, if atmospheric density is 1.29 kg m-3 and atmospheric pressure is 101 kPa, is {{}}

Pressure in fluid depends upon

As depth increases, pressure in a fluid

If extension in spring is proportional to load applied, then material obeys

If a spring is squashed, then forces are

Fractional increase in original length is called

If a force of 50 N is applied across the cross-sectional area of 5 × 10 - 7m2 then stress applied on it is {{}}

Mass of steel sphere having density 7850 kg m-3 and radius 0.15 m is

In a force-extension graph, force is taken along horizontal axis because

Extension and applied force are

1 Pa is equal to

Spring constant of spring is also called

Tensile strain is equal to

In elastic collisions,

Total angular momentum of a body is given by

Force that acts on a mass of 1 g and gives it an acceleration of 1 cm s -2 is defined as {{}}

An object moving in a circle of radius ‘r’ with a constant speed ‘v’ has a constant acceleration towards the center equal to

Einstein's mass-energy relationship states that if the mass decreases by Δm, the energy released ΔE is given by {{}}

Bernoulli's principle states that, for streamline motion of an incompressible non-viscous fluid:

While Young's modulus ‘E’ relates to change in length and bulk modulus ‘K’ relates to change in volume, modulus of rigidity ‘G’ relates to change in:

Young's modulus is defined as

Velocity of escape is equal to

Speed ‘v’ with which wave travels through a medium is given by

Hooke's law states that

Dimensions of strain are {{}}

Due to energy dissipation by viscous forces in air, if simple harmonic variations of a pendulum die away after some time, then oscillation is said to be:

At ‘yield point’ of a copper wire

Stationary waves are also called

When the work done in moving a particle round a closed loop in a field is zero, the forces in the field are called

Substances that elongate considerably and undergo plastic deformation before they break are known as

1 torr is equal to

Velocity of sound waves through any material depends on

Period of simple harmonic motion of a spiral spring or elastic thread is given by

In order to slip one surface over another, maximum frictional force has to be overcome, this maximum frictional force between the two surfaces is also known as

Van der Waals derived an expression for the ‘pressure defect’, if the observed pressure is denoted as ‘p’ and volume is denoted as ‘V’, the gas pressure in the bulk of the gas is equal to:

"Upthrust = Weight of the liquid displaced" is known as

Assuming uniform density of the core, the acceleration due to gravity below the Earth's surface is

When a gas or a liquid is subjected to an increased pressure, the substance contracts, the bulk strain is defined as