Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Hard-Class 12
A laser emits monochromatic light of frequency 6.0 × 10^14 Hz with a power output of 2.0 × 10^-3 W. Calculate the energy of each photon emitted by this laser.
A
98 × 10^-19 J
B
6.63 × 10^-34 J
C
24 × 10^-6 J
D
50 × 10^-19 J
Correct Answer
Option A
Detailed Explanation
The energy of a photon is given by E = hν, where h is Planck's constant (6.63 × 10^-34 J·s) and ν is the frequency (6.0 × 10^14 Hz). Thus, E = (6.63 × 10^-34 J·s)(6.0 × 10^14 Hz) = 3.98 × 10^-19 J.
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