| 1 |
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>
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| 2 |
The property of bending of light around obstacles is |
- A. Interference
- B. Diffraction
- C. Polarization
- D. Superposition
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| 3 |
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
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| 4 |
The Bragg's equation is given by |
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| 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
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| 6 |
Light entering rom air glass does not change in its. |
- A. Frequency
- B. Wavelength
- C. Velocity
- D. Direction
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| 7 |
Sodium chloride in a flame gives |
- A. Green light
- B. White light
- C. Red light
- D. Yellow light
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| 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
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| 9 |
The fringe spacing increases if we use. |
- A. Yellow light
- B. Green lgiht
- C. Blue light
- D. Red light
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| 10 |
Soap film is sunlight appears coloured due to. |
- A. Dispersion of light
- B. Diffraction of light
- C. Scattering of light
- D. Interference fo light
|