| 1 |
The fringe spacing increases if we use. |
- A. Yellow light
- B. Green lgiht
- C. Blue light
- D. Red light
|
| 2 |
Angle between ray of light and wave front is |
- A. 0 <sup>o</sup>
- B. 60 <sup>o</sup>
- C. 90 <sup>o</sup>
- D. 120 <sup>o</sup>
|
| 3 |
Fringe spacing is inversely proportional to. |
- A. Wave length
- B. Slit separation
- C. Distance between the slit and screen
- D. Frequency of light
|
| 4 |
A ray of light shows the direction of propagation of light It is line which is. |
- A. Normal to the wave front
- B. Parallax to the wave front
- C. Opposite to the wave front
- D. Equal to the wave front
|
| 5 |
Which is nooptically active |
- A. Sugar
- B. Tartaric acid
- C. Water
- D. Sodium chloride
|
| 6 |
The blue colour of sky is due to |
- A. diffraction
- B. Reflection
- C. Polarization
- D. Scattering
|
| 7 |
Huygen's proposed, light energy travels in space from source in |
- A. 1578
- B. 1678
- C. 1778
- D. 1868
|
| 8 |
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>
|
| 9 |
X-ray diffraction has been very useful in determining the structure of |
- A. Hemoglobin
- B. Stars
- C. Galaxies
- D. Stones
|
| 10 |
Which of the following is evidence of wave nature of light |
- A. Interference
- B. Diffraction
- C. Polarization
- D. All of these
|