Monochromatic light of frequency 
Hz is produced by a laser. The power emitted is 
The number of photons emitted, on the average, by the source per second is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Power of monochromatic light beam is 
where 
is the number of photons emitted per second.
Power 
Energy of one photon 
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
An electron is accelerated through a potential difference of 10,000 V Its de Broglie wavelength is,…
The work function of a photosensitive material is The longest wavelength of light that can cause p…
An electron of mass m with an initial velocity enters an electric field constant at If is its …
When the light of frequency (where is threshold frequency), is incident on a metal plate, the max…
The de‐Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature ke…
Electrons of mass with de‐Broglie wavelength fall on the target in an ‐ray tube. The cutoff wave…