physics

The process whereby a liquid turns spontaneously into vapour is called?

A. regelation B. evaporation C. boiling D. sublimation Correct Answer: Option B - evaporation

5 years ago

Electrical appliances in homes are normally earthed so that

A. a person touching the appliances is safe from electric shock B. both the a.c. and d.c. sources can be…

5 years ago

The time rate of loss of heat by a body is proportional to the?

A. temperature of its surroundings B. temperature of the body C. difference in temperature between the body and its surroundings…

5 years ago

In the diagram shown; which of the simple pendulum will resonate with P when set into oscillation?

  A. U B. T C. R and T D. Q and R Correct Answer: Option B = T

5 years ago

If the fraction of the atoms of a radioactive material left after 120years is 1/64; what is the half-life of the material? 1/64

A. 20 years B. 10 years C. 2 years D. 24 years Correct Answer: Option A - 20 years

5 years ago

One of the features of the fission process is that?

A. it leads to a chain reaction B. its products are not radioactive C. neutrons are not released D. of…

5 years ago

The pitch of an acoustic device can be increased by?

A. decreasing the loudness B. increasing the intensity C. increasing the frequency D. decreasing the intensity Correct Answer: Option C…

5 years ago