Number of photons of equal energy emitted per second by a 6 mW laser source operating at 663 nm is 
. (Given: 
. s and 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Power of laser: 
Energy of a single photon at wavelength 
:
Number of photons emitted per second:
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A particle having electric charge and mass is accelerated by applying an electric potential of 1.…
The de Broglie wavelength of an oxygen molecule at is . The value of is (take Planck's constant …
When a light of a given wavelength falls on a metallic surface the stopping potential for photoelec…
Light is incident on a metallic plate having work function . If the produced photoelectrons have z…
A light wave described by (in SI units) falls on a metal surface of work function 2.8 eV . The max…
The ratio of de Broglie wavelength of a deutron with kinetic energy to that of an alpha particle w…