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.

3,341.

The diagram above illustrates the velocity-time graph of the motion of a body. Calculate the total distance covered by the body

A.

50m

B.

65m

C.

175m

D.

225m

E.

300m

Correct answer is D

Distance of A = 1/2 x (10 + 20) x 5
= 1/2 x 30 x 5 = 75m. Distance of B = 20 x 5 = 100m
Distance of C = 1/2 x 5 x 20 = 50/225
∴ Total distance is 225m

3,342.

A loaded test-tube which floats upright in water is carefully and slightly depressed and then released. Which of the following best describes the sub-sequent motion of the test-tube?

A.

Circular

B.

Rotational

C.

Random

D.

Oscillatory

E.

Translational

Correct answer is D

No explanation has been provided for this answer.

3,343.

The diagram above represents a portion of a micrometer screw gauge in which the horizontal scale is in millimetres. What is the reading on the instrument?

A.

3.72mm

B.

3.50mm

C.

3.30mm

D.

3.28mm

E.

3.22mm

Correct answer is E

No explanation has been provided for this answer.

3,344.

Which of the following is used for shielding radioactive fall-outs?

A.

Plastic

B.

Wood

C.

Textile

D.

Aluminium

E.

Lead

Correct answer is E

No explanation has been provided for this answer.

3,345.

Which of the following cannot be explained by the molecular theory of matter?

A.

Conduction

B.

Radiation

C.

Convection

D.

Evaporation

E.

Expansion

Correct answer is B

No explanation has been provided for this answer.