| 1 |
In case of point source the shape of wave front is |
- A. Circular
- B. Spherical
- C. Elliptical
- D. Square
|
| 2 |
Hygen's principle is used for. |
- A. Explain polarization
- B. Locate the wave front
- C. Find the speed of light
- D. Find the index of refraction
|
| 3 |
X-ray diffraction has been very useful in determining the structure of |
- A. Hemoglobin
- B. Stars
- C. Galaxies
- D. Stones
|
| 4 |
Oil film floating on water exhibits colours due to |
- A. Interference
- B. Diffraction
- C. Polarization
- D. All of these
|
| 5 |
Michelson's interferometer can be used ot find the |
- A. Velocity of light
- B. Wavelength of light
- C. Velocity of sound
- D. Wavelength of sound
|
| 6 |
Bending of light around the edges of an obstacle is called. |
- A. Refraction
- B. Polarization
- C. Interference
- D. Diffraction
|
| 7 |
The fringe spacing increases if we use. |
- A. Yellow light
- B. Green lgiht
- C. Blue light
- D. Red light
|
| 8 |
The centre of Newton's fringe is dark due to. |
- A. Destructive interference
- B. Diffraction
- C. Constructive interference
- D. Polarization
|
| 9 |
Newton's rings are formed due to phenomenon of. |
- A. Interference
- B. Dispersion
- C. Diffraction
- D. Polarization
|
| 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
|
