Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

A monochromatic source emitting light of wavelength 300 nm has a power output of 33 W. Calculate the number of protons emitted by this source in 2 minutes. $(h=6.62×10^{-34}Js)$

Options:

$6×10^{21}$

$4.2×10^{20}$

$3.8×10^{24}$

$1.6×10^{19}$

Correct Answer:

$6×10^{21}$

Explanation:

The correct answer is Option (1) → $6×10^{21}$