1 |
The centre of Newton's fringe is dark due to. |
- A. Destructive interference
- B. Diffraction
- C. Constructive interference
- D. Polarization
|
2 |
Huygen's proposed, light energy travels in space from source in |
- A. 1578
- B. 1678
- C. 1778
- D. 1868
|
3 |
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
|
4 |
The centre of Newton's rings will be |
- A. Dark
- B. Bright
- C. Coloured
- D. Not visible
|
5 |
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
|
6 |
An oil film on water surface shows colour due to. |
- A. Diffraction
- B. Interference
- C. Polarization
- D. Dispersion
|
7 |
Newton's rings are formed due to phenomenon of. |
- A. Interference
- B. Dispersion
- C. Diffraction
- D. Polarization
|
8 |
Standard metal according to Michelson's interferometer is equivalent to |
- A. 1553163.5 wave meter
- B. 3 x 108meter
- C. 15503000 meter
- D. None of these
|
9 |
The Bragg's equation is given by |
|
10 |
According to Huygen's principle the points on primary wave front can be considered as |
- A. Secondary wavelets
- B. Ray of light
- C. Source of light
- D. None of these
|