# 660+ A Level Physics Solved MCQs

Chapters

58
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Chapter: Accelerated Motion
1.

## Only force acting on a bouncing ball is

A. gravity
B. weight of ball
C. friction
D. a and b both
Answer» D. a and b both
2.

## Accelerometer detects the

A. small acceleration
B. large acceleration
C. small deceleration
D. large acceleration and deceleration
Answer» D. large acceleration and deceleration
3.

A. positive
B. negative
C. zero
D. 1
4.

## If a student drops a stone from a cliff of height 30 m and the time it takes to reach the ground is 2.6 s, then the acceleration due to gravity is

A. $$9ms^{-2}$$$B. $$10ms^{-2}$$$
C. $$4ms^{-2}$$$D. $$8.8ms^{-2}$$$

A. 20 m
B. 30 m
C. 40 m
D. 50 m
7.

A. 30°
B. 47°
C. 90°
D. 45°
8.

## Horizontal component of a bouncing ball is

A. affected by gravity
B. unaffected by gravity
C. affected by weight
D. affected by contact force
9.

## When ball having a projectile motion is rising up, it

A. decelerates
B. accelerates
C. rises up with constant acceleration
D. acceleration becomes zero
10.

## Equation of motion can be used for

A. straight line motion only
B. curved motion only
C. motion along the circular path
D. all types of motion
Answer» A. straight line motion only
11.

## Acceleration of free fall depends on the

A. surface
B. weight of object
C. distance from center of Earth
D. size of object
12.

## If initial velocity of an object is zero, then distance covered by it in time t and acceleration of $$9.8ms^{-2}$$$would be A. $$2.9\:t^{2}$$$
B. $$3\:t^{2}$$$C. $$4\:t^{2}$$$
D. $$4.9\:t^{2}$$$Answer» D. $$4.9\:t^{2}$$$
13.

## As the ball falls towards the ground, its velocity

A. increases
B. decreases
C. remains constant
D. becomes zero
14.

A. velocity
B. displacement
C. distance
D. acceleration
15.

## An object whose velocity is changing is said to be in a state of

A. acceleration
B. rest
C. equilibrium
D. Brownian motion
16.

## Acceleration of train when it is moving steadily from $$4.0\:ms^{-1}$$$to $$20\:ms^{-1}$$$ in 100s is

A. $$1\:ms^{-2}$$$B. $$2\:ms^{-2}$$$
C. $$0.16\:ms^{-2}$$$D. $$3\:ms^{-2}$$$
Answer» C. $$0.16\:ms^{-2}$$$17. ## If we get a straight line with positive slope then its acceleration is A. increasing B. decreasing C. zero D. constant Answer» D. constant 18. ## If a spinster staring from rest has acceleration of $$5ms^{-2}$$$ during 1st 2.0s of race then her velocity after 2 s is

A. $$20ms^{-1}$$$B. $$10ms^{-1}$$$
C. $$15ms^{-1}$$$D. $$5ms^{-1}$$$

A. 24 m
B. 56 m
C. 35.3 m
D. 36.3 m
20.

## If a car starting from rest reaches a velocity of $$18ms^{-1}$$$after 6.0 s then its acceleration is A. $$1ms^{-2}$$$
B. $$2ms^{-2}$$$C. $$3ms^{-2}$$$
D. $$4ms^{-2}$$$Answer» C. $$3ms^{-2}$$$
21.

A. 825 m
B. 700 m
C. 650 m
D. 600 m
22.

## Area under velocity-time graph tells us the

A. time
B. acceleration
C. displacement
D. velocity
Chapter: Alternating Current
23.

## If a secondary coil has 40 turns, and, a primary coil with 20 turns is charged with 50 V of potential difference, then the potential difference in the secondary coil would be

A. 50 V in secondary coil
B. 25 V in secondary coil
C. 60 V in secondary coil
D. 100 V in secondary coil
Answer» D. 100 V in secondary coil
24.

A. 45 kW
B. 50 kW
C. 60 kW
D. 25 kW
25.

A. Vsin ω
B. sin t
C. Vo sinωt
D. V=IR
26.

## In transformer, alternating current is induced in

A. primary coil
B. secondary coil
C. iron core
D. resistor
27.

A. less power loss
B. more power loss
C. high current
D. high resistance
28.

A. cos wave
B. tan wave
C. curve
D. sine wave
29.

A. resistor
B. inductor
C. transformer
D. diode
30.

A. 15.6 W
B. 15 W
C. 16 W
D. 17 W
31.

A. 50%
B. 60%
C. 70%
D. 80%
32.

A. 10%
B. 1.20%
C. 0.1%
D. 20%
33.

## Ratio of voltages is equal to ratio of

A. iron sheets in core
B. coil
C. number of turns in coil
D. all of above
Answer» C. number of turns in coil
34.

A. induction
B. rectification
C. inversion
D. dispersion
35.

## Steady d.c voltage is also known as

A. square velocity
B. root mean square velocity
C. root velocity
D. velocity
Answer» B. root mean square velocity
36.

A. transformer
B. resistor
C. iron core
D. current
37.

A. step up
B. step down
C. faulty
D. fatal
38.

## Highest point on AC graph is known as

A. peak value
B. amplitude
C. frequency
D. wave front
Chapter: AS Level Physics
39.

## There are three equations of uniformly accelerated motion, the odd one out is

A. final_velocity = initial_velocity + (acceleration × time
B. distance_moved = (initial_velocity × time) + (0.5 × acceleration × time²
C. final_velocity² = initial_velocity² + (2 × acceleration × distance_moved
D. final_velocity = initial_velocity + (2 × acceleration × distance_moved
Answer» D. final_velocity = initial_velocity + (2 × acceleration × distance_moved
40.

## Kinetic friction is always

A. lesser than static friction
B. greater than static friction
C. equal to static friction
D. equal to contact force
Answer» A. lesser than static friction
41.

A. positive
B. negative
C. zero
D. infinity
42.

## In order to keep a body moving in a circle, there exists a force on it that is directed toward the center of the circle. This force is known as

A. Centrifugal force
B. Centripetal force
C. Gravitational Force
D. magnetic force
43.

A. 20 kN
B. 50 kN
C. 100 kN
D. 200 kN
44.

A. positive
B. negative
C. zero
D. infinite
45.

## Electrical force exerted by two point charges on each other is inversely proportional to

A. sum of their charges
B. product of their charges
C. distance between them
D. square of distance between them
Answer» D. square of distance between them
46.

A. 1000 bar
B. 100 kPa
C. 100 Pa
D. 1 atm
47.

## Speed of stationary waves is

A. $$1ms^{-1}$$$B. $$2ms^{-1}$$$

A. 3.8 cm
B. 3.7 cm
C. 3.6 cm
D. 3.5 cm
87.

## Hall voltage is directly proportional to

A. current
B. electric field
C. magnetic flux density
D. all of above
88.

## Force due to magnetic field and velocity is

A. at right angles to each other
B. at acute angles with each other
C. at obtuse angle with each other
D. antiparallel to each other
Answer» A. at right angles to each other
89.

## Force on a moving charge in a uniform magnetic field depends upon

A. magnetic flux density
B. the charge on the particle
C. the speed of particle
D. all of above
90.

A. VHd
B. VH⁄d
C. VHE
D. Ed
91.

A. metals
B. non metals
C. semiconductor
92.

A. BeV
B. eV
C. Be
D. BV
93.

A. zero
B. infinite
C. 2 times
D. same
94.

## Direction of conventional current is

A. direction of neutron flow
B. direction of electron flow
C. direction of flow of positive charge
D. same as that of electric current
Answer» C. direction of flow of positive charge
95.

## According to the equation ‘r =(mv)⁄(Be)’, the faster moving particles

A. move in smaller circle
B. move straight
C. move in bigger circle
D. move randomly
Answer» C. move in bigger circle
96.

## In Hall effect, voltage across probe is known as

A. hall voltage
B. e.m.f
C. potential difference
D. hall potential
Chapter: Circular Motion in Physics
97.

## Angle through which an object has moved is called it's

A. linear displacement
B. linear distance
C. angular displacement
D. angular distance
98.

A. 0.189 cm s-1
B. 1 cm s-1
C. 0.189 m s-1
D. 2 m s-1
99.

## Object moving along a circular path is

A. in equilibrium
B. not in equilibrium
C. not moving with constant speed
D. in random motion
100.

## At the fairground, the force that balances out our weight is

A. centripetal force
B. centrifugal force
C. friction
D. gravitational force

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