Waves — Physics MCQs (Class 11)
Free chapter-wise Physics MCQs with answers for MDCAT, FSc and entry tests.
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#9 Which of the following increases if the frequency of a wave is increased?
Wavelength A)
Wave speed B)
Amplitude C)
Energy of the wave D)
#10 The law of reflection states that:
The angle of incidence is equal to the angle of reflection. A)
The angle of refraction is equal to the angle of incidence. B)
The speed of light is constant. C)
Light bends towards the normal. D)
#11 When a wave passes from one medium to another, it changes direction. This is called:
Refraction A)
Reflection B)
Diffraction C)
Interference D)
#12 Which of the following best describes diffraction?
The bending of waves around obstacles. A)
The bouncing of waves off a surface. B)
The change in direction of waves due to a change in speed. C)
The interference of two waves resulting in cancellation. D)
#13 What is the effect of increasing the wavelength on the frequency of a wave?
The frequency increases. A)
The frequency decreases. B)
The frequency stays constant. C)
The frequency becomes zero. D)
#14 What happens when two waves meet in phase?
They cancel each other out. A)
They add to form a larger wave. B)
They pass through each other. C)
They stop vibrating. D)
#15 What is the unit of wavelength?
Hertz (Hz) A)
Meter (m) B)
Second (s) C)
Newton (N) D)
#16 The speed of light in a vacuum is:
3 x 10^8 m/s A)
3 x 10^6 m/s B)
1 x 10^8 m/s C)
1 x 10^6 m/s D)
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