Production and Propagation - Jamb Physics Past Questions and Answers

Question 11:

• JAMB 1987

A wave has a frequency of 2Hz and a wavelength of 30cm. The velocity of the wave is

A. 60.0ms^-1
B. 6.0ms^-1
C. 1.5ms^-1
D. 0.6ms^-1

Question 12:

• JAMB 1987

A boat at anchor is rocked by waves whose crest are 100m apart and whose velocity is 25ms^-1. At what interval does the wave crest reach the boat?

A. 2500.00s
B. 75.00s
C. 4.00s
D. 0.25s

Question 13:

• JAMB 1988

The fig above shows two waveforms X and Y. If the frequency of X is 30Hz what is the frequency of Y

A. 12Hz
B. 19Hz
C. 60Hz
D. 75Hz

Question 14:

• JAMB 1990

A light wave of frequency 5 x 10¹⁴Hz moves through water which has a refractive index of \(\frac{4}{3}\). Calculate the wavelength in water if the velocity of light in air is 3 x 10⁸ms^-1

A. 4.5 x 10^-7m
B. 6.0 x 10^-7m
C. 1.7 x 10⁶m
D. 2.2 x 10⁶m

Question 15:

• JAMB 1992

The equation of a wave is y = 0.005 sin[x(0.5X - 200t)] where x and y are in meters and t is in seconds. What is the velocity of the wave?

A. 4000ms^-1
B. 400ms^-1
C. 250ms^-1
D. 40ms^-1