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Physics Class 11 - Chapter 8
WavesTest - 2
1.
Condition for interference are?
a) Same medium
b) Coherent source
c) Same direction
d) All of these
2.
Echoing zone is region for?
a) Constructive interference
b) Destructive interference
c) Open space
3.
Applications of principle of superposition are?
a) All of these
b) Stationary waves
c) Beats
d) Interference
4.
The resultant displacement of a point of medium is equal to sum of individual displacement produced by each move this is?
a) Law of conservation of momentum
b) Law of conservation of mass
c) Law of conservation of energy
d) Principle of superposition
5.
The distance between two consecutive crusts or trough is?
a) Frequency
b) Phase difference
c) Wavelength
d) Period
6.
Sound waves produces?
a) Refraction
b) Diffraction
c) All of these
d) Reflection
7.
Laplace corrected Newton’s formula by explaining that air propagates?
a) All of these
b) Isothermally
c) Isobarically
d) Adiabatically
8.
The speed of sound in hydrogen is greater than speed in oxygen?
a) Ten times
b) Sixteen times
c) Eight times
d) Four times
9.
When two identical traveling waves are superimposed, the velocity of the resultant wave will be?
a) Increase
b) Decrease
c) Remain same
d) Become zero
10.
The waves produced by equal frequency and equal amplitude in same line but opposite direction are?
a) Transverse waves
b) Stationary waves
c) Perpendicular waves
d) Longitudinal waves
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