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Solution - Monochromatic Light of Wavelength 632.8 Nm is Produced by A Helium-neon Laser. the Power Emitted is 9.42 Mw. - Particle Nature of Light: the Photon

ConceptParticle Nature of Light: the Photon

Question

Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW.

(a) Find the energy and momentum of each photon in the light beam,

(b) How many photons per second, on the average, arrive at a target irradiated by this beam? (Assume the beam to have uniform cross-section which is less than the target area), and

(c) How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon?

Solution

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APPEARS IN

NCERT Physics Textbook for Class 12 Part 2
Chapter 11: Dual Nature of Radiation and Matter
Q: 4 | Page no. 407

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Reference Material

Solution for question: Monochromatic Light of Wavelength 632.8 Nm is Produced by A Helium-neon Laser. the Power Emitted is 9.42 Mw. concept: Particle Nature of Light: the Photon. For the courses CBSE (Arts), CBSE (Commerce), CBSE (Science)
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