Physics questions and answers

Physics Questions and Answers

If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.

1,141.

What part of a camera functions in a similar way to the retina of the eye?

A.

diaphragm

B.

film

C.

focusing ring

D.

lens

E.

shutter

Correct answer is B

No explanation has been provided for this answer.

1,142.

Which is NOT one of the laws of solid friction?

A.

The frictional force between two surfaces opposes their relative motion

B.

The ratio of frictional force to the normal reaction varies for two given surfaces

C.

The ratio of frictional force to the normal reaction is constant for two given surfaces

D.

The limiting frictional force is independent of the area of surface in contact.

E.

Dynamic frictional force is independent of the relative velocity of the surfaces in contact.

Correct answer is B

No explanation has been provided for this answer.

1,143.

An electron of charge a = 1.6 × 10-19C is situated in a uniform electric field of intensity 2.4 × 105 V m-1. What is the force on the electron?

A.

1.60 × 10-19N

B.

3.84 × 1019N

C.

1.92 × 10-14N

D.

3.84 × 10-14N

E.

7.68 × 10-14N

Correct answer is D

No explanation has been provided for this answer.

1,144.

Which statement is TRUE of a block of stone of mass m, with zero momentum?

A.

The acceleration of the stone is non-uniform

B.

The stone is stationary

C.

The stone moves at a constant velocity

D.

The stone moves with maximum velocity

E.

The stone moves with minimum velocity.

Correct answer is B

No explanation has been provided for this answer.