| 1 |
In case of point source the shape of wave front is. |
- A. Plane
- B. spherical
- C. Circular
- D. Eliptical
|
| 2 |
Interplaner distance can be determined by |
- A. Newton's rings
- B. Bragg's law
- C. Diffraction pattern
- D. Interferometer
|
| 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 |
Young in 1801 performed experiment for the first time about |
- A. Interference
- B. Diffraction
- C. Polarization
- D. Particle nature of light
|
| 5 |
Light entering rom air glass does not change in its. |
- A. Frequency
- B. Wavelength
- C. Velocity
- D. Direction
|
| 6 |
Intensity of light depend on |
- A. Wave length
- B. Amplitude
- C. Velocity
- D. Frequency
|
| 7 |
A ray of light is a line |
- A. Parallel to wave front
- B. Normal to wave front
- C. Anti-parallel to wave
- D. Any one of these
|
| 8 |
The wavelength of X-rays is of the order of. |
- A. 10<sup>-8</sup> m
- B. 10<sup>-10</sup>m
- C. 10<sup>-5</sup>m
- D. 10<sup>-4</sup>m
|
| 9 |
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>
|
| 10 |
the locus of all pint in the same wave of vibration is called. |
- A. Wave front
- B. Diffraction
- C. Interference
- D. Polarization
|
