If \(c\) is the velocity of light in free space, the correct statements about photons among the following are:

(A) The energy of a photon is \(E=h\nu.\)
(B) The velocity of a photon is \(c.\)
(C) The momentum of a photon, \(p={\dfrac{h\nu}{c}}.\)
(D) In a photon-electron collision, both total energy and total momentum are conserved.
(E) Photon possesses a positive electric charge.
Choose the correct answer from the options given below:
1. (A), (B), (C) and (D) only
2. (A), (C) and (D) only
3. (A), (B), (D) and (E) only
4. (A) and (B) only
Subtopic:  Particle Nature of Light |
 63%
From NCERT
NEET - 2024
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The number of photons per second on an average emitted by a source of monochromatic light of wavelength \(600~\text{nm}\), when it delivers the power of \(3.3\times 10^{-3}\) watt will be: 
\((h = 6.6\times10^{-34}~\text{J-s})\)

1. \(10^{16}\) 2. \(10^{15}\)
3. \(10^{18}\) 4. \(10^{17}\)
Subtopic:  Particle Nature of Light |
 65%
From NCERT
NEET - 2021
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