Monochromatic light of frequency 6.0 x 10¹⁴ Hz is produced by a laser. The power emitted

Monochromatic Light Of Frequency 60 X 10 Hz Is Produced Physics Question

Monochromatic light of frequency 6.0 x 10¹⁴ Hz is produced by a laser. The power emitted is 2 x 10⁻³ ?. The number of photons emitted, on the average, by the sources per second is

Options

(a) 5 x 10¹⁶
(b) 5 x 10¹⁷
(c) 5 x 10¹⁴
(d) 5 x 10¹⁵

Correct Answer:

5 x 10¹⁵

Explanation:

Since P = nhv
n = p/hv = 2 x 10⁻³ / 6.6 x 10⁻³⁴ x 6.0 x 10¹⁴
= 5 x 10¹⁵

Related Questions:

  1. A horizontal straight conductor kept in north-south direction falls under gravity. Then
  2. In a uniform circular motion,
  3. An electron in the hydrogen atom jumps from excited state n to the ground state
  4. The period of a simple pendulum inside a stationary lift is T. The lift accelerates
  5. A national roadway bridge over a canal is in the form of an arc of a circle of radius

Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*