| 1 |
According to Hygen's principle, each point on a wave front acts as a source of. |
- A. Secondary wavelet
- B. New wave front
- C. Sound
- D. Primary wavelet
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| 2 |
The distance between two consecutive wave front is equal to |
- A. One wave length
- B. Two wave length
- C. Half wave length
- D. Three wave length
|
| 3 |
Bending of light around the edges of an obstacle is called. |
- A. Refraction
- B. Polarization
- C. Interference
- D. Diffraction
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| 4 |
The fringe spacing in a double slit experiment can be increased by decreasing. |
- A. Wavelength of light
- B. Width of slits
- C. Slit separation
- D. Distance between the slits and the screen
|
| 5 |
When one mirror of a Michelson interferometer is moved a distance of 0.5 mm, 2000 fringes and observed, The wavelength of light used is. |
- A. 5000 m
- B. 50000 A<sup>o</sup>
- C. 500 cm
- D. 2000 A<sup>o</sup>
|
| 6 |
The blue colour of sky is due to |
- A. diffraction
- B. Reflection
- C. Polarization
- D. Scattering
|
| 7 |
A ray of light shows the direction of propagation of light It is line which is. |
- A. Normal to the wave front
- B. Parallax to the wave front
- C. Opposite to the wave front
- D. Equal to the wave front
|
| 8 |
Light entering rom air glass does not change in its. |
- A. Frequency
- B. Wavelength
- C. Velocity
- D. Direction
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| 9 |
The phenomenon of polarization of light reveals that sun light is |
- A. Longitudinal waves
- B. Transverse wave
- C. Electromagnetic waves
- D. Monochromatic wave
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| 10 |
In case of point source the shape of wave front is. |
- A. Plane
- B. spherical
- C. Circular
- D. Eliptical
|