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.

If the gradient of a graph is negative, then the acceleration is

A. positive
B. negative
C. zero
D. 1
Answer» B. negative
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. $$$8.8ms^{-2}$$$
Answer» D. $$$8.8ms^{-2}$$$
5.

Gradient of line of velocity-time graph is tells us the

A. velocity
B. acceleration
C. distance
D. time
Answer» B. acceleration
6.

A stone is thrown upwards with initial velocity of $$$20ms^{-1}$$$, the height that stone will reach would be

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

Projectile will attain its maximum range, if it is fired at an angle of

A. 30°
B. 47°
C. 90°
D. 45°
Answer» 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
Answer» B. unaffected by gravity
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
Answer» A. decelerates
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
Answer» B. weight 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
Answer» A. increases
14.

Gradient of velocity-time graph tells us about object's

A. velocity
B. displacement
C. distance
D. acceleration
Answer» 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
Answer» A. acceleration
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. $$$5ms^{-1}$$$
Answer» B. $$$10ms^{-1}$$$
19.

Horizontal distance traveled by a ball if it's thrown with initial velocity of $$$20ms^{-1}$$$ at an angle of 30° is

A. 24 m
B. 56 m
C. 35.3 m
D. 36.3 m
Answer» C. 35.3 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 train travelling at $$$20m s^{-1}$$$ accelerates at $$$ 0.5ms^{-2}$$$ for 30 s, the distance travelled by train is

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

Area under velocity-time graph tells us the

A. time
B. acceleration
C. displacement
D. velocity
Answer» C. displacement
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.

Generators at a power station produce electric power at voltage

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

Equation which measures alternating voltage is

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

In transformer, alternating current is induced in

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

High voltages lead to

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

Graph of alternating current is a

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

A component that allows only unidirectional current to pass through it is

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

Average power dissipated in resistor if sinusoidal p.d of peak value 25V is connected across a 20 Ω resistor is

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

Amount of d.c voltage as compare to Vo is

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

A well designed transformer loses power under

A. 10%
B. 1.20%
C. 0.1%
D. 20%
Answer» C. 0.1%
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.

Process in which A.C is converted into D.C is called

A. induction
B. rectification
C. inversion
D. dispersion
Answer» B. rectification
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.

Ratio of voltages is inverse ratio of the

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

If output voltage is greater than input voltage, then transformer is

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

Highest point on AC graph is known as

A. peak value
B. amplitude
C. frequency
D. wave front
Answer» A. peak value
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.

Gravitational potential is always

A. positive
B. negative
C. zero
D. infinity
Answer» B. negative
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
Answer» B. Centripetal force
43.

A rectangle-shaped open-to-sky tank of water has a length of 2 m and a width of 1 m. If the atmospheric pressure is assumed to be 100 kPa and thickness of the tank walls is assumed to be negligible, the force exerted by the atmosphere on the surface of water is

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

If we have a positive and a negative charge, then force between them is

A. positive
B. negative
C. zero
D. infinite
Answer» B. negative
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.

Unit for pressure used in weather maps is millibar. 1 millibar is equal to

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

Speed of stationary waves is

A. $$$1ms^{-1}$$$
B. $$$2ms^{-1}$$$
C. $$$3ms^{-1}$$$
D. zero
Answer» D. zero
48.

If charge is placed at infinity, it's potential is

A. zero
B. infinite
C. 1
D. -1
Answer» A. zero
49.

Most appropriate instrument for measurement of internal and external diameter of a tube is

A. vernier callipers
B. micrometer screw gauge
C. meter rule
D. measuring tape
Answer» A. vernier callipers
50.

When distance from center is doubled then electric field strength will

A. decrease by the factor of four
B. increase by factor of four
C. will be same
D. decrease by factor of two
Answer» A. decrease by the factor of four

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