Dispersion can take place for
|
(a) Transverse waves only but not for longitudinal waves |
|
(b) Longitudinal waves only but not for transverse waves |
|
(c) Both transverse and longitudinal waves |
|
(d) Neither transverse nor longitudinal waves |
(c) Both transverse and longitudinal waves
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A beam of light of wavelength λ and with illumination L falls on a clean surface of sodium. If N photoelectrons are emitted each with kinetic energy E, then
|
(a) N ∝ L and E ∝ L |
(b) N ∝ L and E ∝ |
|
(c) N ∝ |
(d) N ∝ |
In Young's double slit experiment, white light is used. The separation between the slits is b. The screen is at a distance d (d>> b) from the slits. Some wavelengths are missing exactly in front of one slit. These wavelengths are
|
(a) λ = |
(b) λ = |
(c) λ = |
(d) a, b |
The amplification produced by a triode is due to the action of
|
(a) Filament |
(b) Cathode |
(c) Grid |
(d) Plate |
