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.

1,106.

The ability of the eye to focus on objects at various distances is known as

A.

accommodation

B.

astigmatism

C.

eye ring

D.

myopia

E.

presbyopia

Correct answer is A

No explanation has been provided for this answer.

1,107.

In an operating X-ray tube, a high p.d is applied between the cathode and the anode for the purpose of

A.

accelerating the electrons to a very high energy

B.

concentrating electrons on the target

C.

heating the anode

D.

heating the cathode

E.

producing a stream of electrons

Correct answer is A

No explanation has been provided for this answer.

1,108.

In 24 days a radioactive isotope decreases in mass from 128g to 2g. What is the half-life of the radioactive material?

A.

2.54 days

B.

4.00 days

C.

4.80 days

D.

6.00 days

E.

8.00 days

Correct answer is B

No explanation has been provided for this answer.

1,109.

The magnetic effect of a current-carrying coil is NOT utilized in the making of a/an

A.

carbon microphone

B.

electric bells

C.

magnetic relay

D.

telephone earpiece

E.

thermostat

Correct answer is E

No explanation has been provided for this answer.