SECTION A
QUESTION 1
Suggested Question Types: Multiple Choice/Objectives
Each question in this section carries two marks
[40 MARKS]
1.1 Which of the following is not a mechanical wave?
(2)
a. wave propagated in stretched string
c. radio waves
d. water wave
b. waves in closed pipe
1.2 If Vis the velocity of a wave,)., its wavelength and Tits period, the V, A and T
Are related by the expression:
(2)
a. A= VT
c. T 2 = AV d. V = AT
1.3 If the angle of incidence for light travelling from air to glass is 45° and
the angle of refraction in the glass is 28°, determine the refractive index
of glass with respect to air.
(2)
a. 1.51 b. 0.66 c. 1.62 2.25
1.4 What is the speed of compression waves (sound waves) in water? The bulk
modulus for water is 2.2 X 10 9 N/m 2•
(2)
a. 1.6 km/s b. 1.5 km/s c. 1.7 km/s d. 1.8 km/s
1.5 All are example of electromagnetic wave except ................
(2)
a. visible light b. microwave c. X-rays d. beta
1.6 A normal human ear can respond to .............frequency range.
(2)
a. 20 Hz to 20,000 Hz b. 20,000 Hz to 20, 000000 Hz c. below 20 Hz
d. above 20,000 Hz
1.7 What is the refractive index of a substance if the real depth is 6 m and its
apparent depth is 4.5 m?
(2)
a. 10.5 b. 1.33 c. 1.50 d. 0.75
General Physics 1B (GNP502S)
2nd Opportunity January 2024
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