1 |
In case of point source the shape of wave front is |
Circular
Spherical
Elliptical
Square
|
2 |
Light waves emitted from a source spread in |
Specific direction
All direction
Upward direction
None of these
|
3 |
Young in 1801 performed experiment for the first time about |
Interference
Diffraction
Polarization
Particle nature of light
|
4 |
Which of the following is evidence of wave nature of light |
Interference
Diffraction
Polarization
All of these
|
5 |
Huygen's proposed, light energy travels in space from source in |
1578
1678
1778
1868
|
6 |
In stationary waves, the particle velocity at nodes is |
Minimum
Maximum
Zero
Constant
|
7 |
When ever the path difference between the waves is integral multiple of half the wavelength, interference will be |
Constructive
Destructive
(-)ve
(+) ve
|
8 |
When two waves of same frequency travel in opposite direction, the phenomenon will be |
Diffraction
Stationary waves
Polarization
Interference
|
9 |
When two waves having same frequency traveling in same direction combine, phenomenon is called |
Wave motion
Combination of waves
Interference
Diffraction
|
10 |
The distance between the consecutive nodes is |
|
11 |
When the amplitude of a wave become double, its energy becomes |
One half
Two times
Three times
Four times
|
12 |
The distance between two consecutive crests of troughs is called |
Time period
Wave length
Frequency
Displacement
|
13 |
The speed of sound increases with the increase of in |
Pressure
Volume
Temperature
Density
|
14 |
The experimental value for the velocity of sound in air is |
233 m-sec<sup>-1</sup>
333 m-sec<sup>-1</sup>
433 m-sec<sup>-1</sup>
533 m-sec<sup>-1</sup>
|
15 |
Who did give the correct formula for the speed of sound in air? |
Boyle
Laplace
Newton
Einstein
|
16 |
The Newton's formula for the speed of sound in air is |
|
17 |
Which of the following is mechanical wave |
Heat
Light
Sound
None of these
|