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NEET
Exam
NEET
Subject
Physics
Chapter
Dual Nature of Matter

NEET · Physics · Dual Nature of Matter

What is the average number of photons per second arriving at a...

What is the average number of photons per second arriving at a target irradiated by a helium-neon laser emitting monochromatic light of wavelength 632.8 nm with a power of 9.42 mW?

Options

  1. A1 × 1015photons/s
  2. B2 × 1016photons/s
  3. C3 × 1016photons/s
  4. D4 × 1017photons/s

Correct answer

C. 3 × 1016photons/s

Step-by-step solution

Correct Option is : (C)
3 × 1016photons/s
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