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.

3,261.

Which of the following statements is not correct about long sight?

A.

A Iong-sighted person can see distant objects clearly

B.

Light from a nearby object is focused behind the retina.

C.

The eyeball is too short

D.

The defect is corrected by using a diverging lens

Correct answer is D

No explanation has been provided for this answer.

3,263.

The refractive index of glass for yellow light is greater than that for red light because yellow light

A.

has a greater amplitude than red light

B.

is more intense than red light

C.

travels more slowly than red light

D.

deviates less than red light

Correct answer is A

No explanation has been provided for this answer.

3,264.

The image of an object is located 6cm behind a convex mirror. If its magnification is 0.6, calculate the focal length of the mirror

A.

3.75cm

B.

6.60cm

C.

10.00cm

D.

-15.00cm

Correct answer is D

V = -6cm

M = 0.6cm

Recall m = \(\frac{V}{U}\)

U = \(\frac{V}{M}\)

U = \(\frac{6}{0.6}\)

 U = 10

  \(\frac{1}{U}\) + \(\frac{1}{V}\) = \(\frac{1}{F}\)

 \(\frac{1}{10}\) + \(\frac{1}{-6}\) = \(\frac{1}{F}\)

\(\frac{-4}{60}\) = \(\frac{1}{F}\)

 F = \(\frac{60}{-4}\)

=  -15cm

3,265.

The air column in a resonance tube is set into resonance by a vibrating tuning fork. The resultant waves in the air column will be

A.

mechanical and transverse

B.

progressive and longitudinal

C.

stationary and transverse

D.

stationary and longitudinal.

Correct answer is D

No explanation has been provided for this answer.