Post Utme Physics Past Questions and Answers

Question 436:

A wave travels with a velocity of 360 m/s. If its wavelength is 120 cm then its period is ____________

A. 0.0017s
B. 0.33 a
C. 33s
D. 1.7 s

Question 437:

The heights of the mercury thread in a mercury in-glass thermometer when melting ice and then in steam are 2 cm and 22 cm respectively. What would be the height of the mercury thread at 700?

A. 14cm
B. 12 cm
C. 16 cm
D. 18 cm.

Question 438:

An object is placed 45 cm in front of a concave mirror of focal length 15 cm. What the linear magnification produced?

A. 1/3
B. 2
C. 3
D. 1/2

Question 439:

A man has five 40 W electric light bulbs, six 60 W bulbs and two 100 W bulbs in his house. If all the points are on for five hours daily and PHCN charges 12k per unit, what is his bill for 30 days?

A. N13.68
B. NO.46
C. N2.74
D. None of the above

Question 440:

In a resonance tube experiment, the first resonance position is 16 cm when the velocity of sound in air is 327.68 m/s. Find the frequency of the tuning fork used

A. 512kHz
B. 256 Hz
C. 128 Hz
D. 512 Hz