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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.

296.

A luminous object is one that

A.

gives off dim blue-green light only in the dark.

B.

gives out light of its own

C.

shines by reflected light only

D.

glows only in the presence of light

Correct answer is B

No explanation has been provided for this answer.

297.

Which of the following actions would increase the electric force between two positively charged particles?
 

A.

Decreasing the mass of the particles

B.

Decreasing the distance between the particles

C.

Increasing the assistance between the particles

D.

Increasing the mass of the particles

Correct answer is B

No explanation has been provided for this answer.

298.

A diver steps off a diving platform that is 10m above the water. If there is no air resistance during the fall, there will be a decrease in the diver's

A.

gravitational potential energy

B.

total mechanical energy

C.

kinetic energy

D.

momentum

Correct answer is A

No explanation has been provided for this answer.

300.

An electron of mass 9.1x 1031 kg is travelling at a speed of 2.0 x 106ms1. Calculate the associate wavelength of the electron. [h = 6.6. x 1034 Js]

A.

3.63 x1010 m

B.

3.63 x 108 m

C.

3.63 x 107 m

D.

6.89 x 104 m

Correct answer is A

No explanation has been provided for this answer.