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.

1,216.

In the fig above, XY is of length 1m, The value of R at balance point Z is

A.

3.0Ω

B.

13.3Ω

C.

15.0Ω

D.

30.0Ω

Correct answer is D

At null deflection, p.d across R = p.d across xz

p.d across 20Ω = p.d across zy 

\(\frac{R}{20}\) = \(\frac{60}{40}\)

R = 30Ω

 

1,217.

In the fig above if the atmospheric pressure is 760mm, the pressure of the chamber G is

A.

660mm

B.

690mm

C.

830mm

D.

860mm

Correct answer is C

No explanation has been provided for this answer.

1,219.

What is the reading of the vernier calipers shown above

A.

1.79cm

B.

1.73cm

C.

1.39cm

D.

1.34cm

Correct answer is C

the vernier scale reading is the division on the vernier that tallies exactly with a division in the main scale

1,220.

In the network shown above, determine the potential difference across the 5µF capacitor

A.

3V

B.

6V

C.

12V

D.

18V

Correct answer is D

No explanation has been provided for this answer.