Options:
- A. velocity
- B. wavelength
- C. amplitude
- D. frequency
View Answer
D. frequency
Physics
Crystals of a material can behave as_________________?
Options:
- A. Convex lens
- B. Interferometer
- C. Diffraction grating
- D. Concave
View Answer
C. Diffraction grating
Photoelectric effect was given by ____________________?
Options:
- A. Hertz
- B. Fresnel
- C. Einstein
- D. Plank
View Answer
C. Einstein
Which is not optically active ?
Options:
- A. sugar
- B. tartaric acid
- C. water
- D. sodium chlorate
View Answer
C. water
Longitudinal waves do not exhibit _____________________?
Options:
- A. reflection
- B. refraction
- C. diffraction
- D. polarization
View Answer
D. polarization
When light incident normally on thin film the path difference depends upon ________________?
Options:
- A. thickness of the film only
- B. nature of the film only
- C. angle of indidence only
- D. all thickness nature and angle of incidence
View Answer
D. all thickness nature and angle of incidence
A point source of light placed in a homogeneous medium gives rise to ___________________?
Options:
- A. a cylindrical wave front
- B. an elliptical wave front
- C. a spherical wave front
- D. a plane wave front
View Answer
C. a spherical wave front
Light reaches the earth form sun in nearly____________________?
Options:
- A. 15 minutes
- B. 10 minutes
- C. 8 minutes
- D. 8 minutes 30 seconds
View Answer
D. 8 minutes 30 seconds
Which one of the following is nearly monochromatic light ?
Options:
- A. light form fluorescent tube
- B. light form neon lamp
- C. light form sodium lamp
- D. light form simple lamp
View Answer
C. light form sodium lamp
According to Einstein light travels form one place to another in the form of ________________?
Options:
- A. waves
- B. particles
- C. photons
- D. it was not his discovery
View Answer
C. photons