| 1 |
Example of thin film is. |
- A. Soap burble
- B. convex lens
- C. Concave lens
- D. Glass plate
|
| 2 |
Young in 1801 performed experiment for the first time about |
- A. Interference
- B. Diffraction
- C. Polarization
- D. Particle nature of light
|
| 3 |
An oil film on water surface shows colour due to. |
- A. Diffraction
- B. Interference
- C. Polarization
- D. Dispersion
|
| 4 |
Bright fringes are also called as |
- A. Minima
- B. Maxima
- C. Wave front
- D. Ray of light
|
| 5 |
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
|
| 6 |
The centre of Newton's fringe is dark due to. |
- A. Destructive interference
- B. Diffraction
- C. Constructive interference
- D. Polarization
|
| 7 |
Which is nooptically active |
- A. Sugar
- B. Tartaric acid
- C. Water
- D. Sodium chloride
|
| 8 |
Sodium chloride in a flame gives |
- A. Green light
- B. White light
- C. Red light
- D. Yellow light
|
| 9 |
In case of point source the shape of wave front is. |
- A. Plane
- B. spherical
- C. Circular
- D. Eliptical
|
| 10 |
Which one of the following can not be polarized. |
- A. Ultra violet rays
- B. Radio waves
- C. T.V. Waves
- D. Sound waves
|
