A light source approaches the observer with velocity 0.8 c. The doppler shift for the light of wavelength 5500 Å is
|
(a) 4400 Å |
(b) 1833 Å |
(c) 3167 Å |
(d) 7333 Å |
(c) 3167 Å
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The truth table shown in figure is for
|
A |
0 |
0 |
1 |
1 |
|
B |
0 |
1 |
0 |
1 |
|
y |
1 |
0 |
0 |
1 |
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(a) XOR |
(b) AND |
(c) XNOR |
(d) OR |
If intensity of incident light is increased in PEE then which of the following is true
|
(a) Maximum K.E. of ejected electron will increase |
|
(b) Work function will remain unchanged |
|
(c) Stopping potential will decrease |
|
(d) Maximum K.E. of ejected electron will decrease |
Light of wavelength 5000 Å falls on a sensitive plate with photoelectric work function of 1.9 eV. The kinetic energy of the photoelectron emitted will be
|
(a) 0.58 eV |
(b) 2.48 eV |
(c) 1.24 eV |
(d) 1.16 eV |