Free MCQs & Online Quiz Practice for Exams

Q: The point at which an applied force produces linear motion but no rotatory motion is (Entry test 2011)

A) mid point

B) centre of gravity

C) optical centre

D) Pole

Q: A projectile is launched at 45° to the horizontal with initial kinetic energy E. What will be the K.E of projectile when it reaches its highest point? (2014)

A) 0.50 E

B) 0.71 E

C) 0.87 E

D) E

Q: A body is released from the top of an inclined plane that makes an angle θ with the horizontal. The coefficient of friction is estimated best with. (2004)

A) sinθ

B) cosθ

C) tanθ

D) cotθ

Q: Which pair of the following physical quantities have the same dimensions? (2005)

A) Force,energy

B) work,power

C) momentum,impulse

D) torque,density

Q: A stone is thrown straight up and reaches a height H. Before falling back to the ground after T seconds, its average speed during T is (2005)

A) Zero

B) H/T

C) H/2T

D) HT

Q: Neutrons can be slowed down if the stationary targets are (2010)

A) β particles

B) Photons

C) Protons

D) Atoms

Q: To improve the jumping record, a long jumper should jump at an angle of (2010)

A) 30°

B) 45°

C) 60°

D) 90°

Q: Two projectiles are in flight at the same time. The acceleration of one relative to the other (2015)

A) is always 9.8 m/s²

B) can be horizontal

C) can be as large as 19.8 m/s²

D) is zero

Q: A ball is thrown vertically upward with a velocity of 98 m/s. If it takes 10 seconds to reach the highest point, the acceleration of the ball is (2011)

A) 9.8 m/s²

B) 980 m/s²

C) 98 m/s²

D) -9.8 m/s²

Q: A man throws a ball vertically upward in a compartment of an accelerated train. The ball will fall (2011)

A) In front of him

B) In his hands

C) behind him

D) Beside him

Q: A feather falls in a vertical glass vacuum tube. The time of fall from rest is 0.5 s. What tube length is required? (2015)

A) 1.3 m

B) 2.5 m

C) 10.0 m

D) 5.0 m

Q: The property of a moving object by virtue of which it exerts force on an object that tries to stop it is (2011)

A) inertia of the body

B) Quantity of motion

C) acceleration of the body

D) All of three

Q: When a force is applied to a body, which one of the following effects cannot occur? (2012)

A) the body speeds up

B) the body rotates

C) the body changes direction

D) mass of the body decreases

Q: A hunter aiming a bird in a tree should aim (2012)

A) a little above the bird

B) a little below the bird

C) exactly at the bird

D) very high

Q: The velocity of a projectile at its maximum height is (2012)

A) zero

B) minimum

C) maximum

D) in between maximum and minimum

Q: Two blocks of masses 1.0 kg and 3.0 kg placed in contact are acted upon by a force of 40 N. The acceleration of the 1.0 kg mass will be (2012)

A) 40 m/s²

B) 10 m/s²

C) 30 m/s²

D) 50 m/s²

Q: A person travels a distance x = 20t + 2At². The acceleration of the person is (2011)

A) A/4 m/s²

B) 4/A m/s²

C) 4 m/s²

D) 4A m/s²

Q: A paratrooper of mass 80 kg descends vertically at constant velocity 3 m/s. Taking g = 10 m/s², what is the net force acting on him? (2009)

A) zero

B) 800 N

C) 800 N upward

D) 240 N downward

Q: A particle of mass m has momentum p, its K.E will be: (Entry test 2015)

A) mP

B) P/m

C) P²/m

D) P²/2m

Q: If a hole is bored through the center of the earth and a pebble is dropped in it, then it will: (Entry test 2014)

A) execute SHM

B) drop to the other side

C) stop at the center of the earth

D) needs some more information