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.

2,152.

The frictional effect between the layers of a moving fluid is called

A.

capillarity

B.

turbulence

C.

diffusion

D.

osmosis

E.

viscosity

Correct answer is E

No explanation has been provided for this answer.

2,153.

A radioactive nuclide of proton number X emits a \(\beta\)-particle to form a new nuclide to proton number Y. The correct equation relating X and Y is

A.

X = Y - 1

B.

X = Y + 1

C.

X = 1 - Y

D.

X = \(\frac{1}{y}\)

E.

X = Y

Correct answer is B

There is an increase in proton number by one in a beta-decay.

2,154.

The process of increasing the energy of an atom via inelastic collision with an electron is known as

A.

ionization

B.

excitation

C.

field emission

D.

photoemission

E.

thermionic emission

Correct answer is B

No explanation has been provided for this answer.

2,155.

The diagram above represents a section of a pair of vernier calipers. The reading on the instrument is

A.

5.22cm

B.

5.24cm

C.

5.26

D.

5.35

Correct answer is C

T\(\frac{1}{2}\) = \(\frac{0.693}{\pi}\)

= \(\frac{0.693}{0.077}\) = 9.0