﻿ When a beam of 10.6-eV photons of intensity 2.0 Wm–2 falls on a platinum surface of area  and work function 5.6 eV, 0.53% of the incident photons eject photoelectrons. Find the number of photoelectrons emitted per second and their minimum and maximum energies (in eV). Take .  : Kaysons Education

# When A Beam Of 10.6-eV Photons Of Intensity 2.0 Wm–2 falls On A Platinum Surface Of Area  and Work Function 5.6 EV, 0.53% Of The Incident Photons Eject Photoelectrons. Find The Number Of Photoelectrons Emitted Per Second And Their Minimum And Maximum Energies (in EV). Take .

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## Question

### Solution

Correct option is

The number of photons failing on the platinum surface is

Only 0.53% of the photons emit photoelectrons. Therefore, number of photoelectrons emitted is

The minimum energy of the photoelectrons emitted will be zero. The maximum energy will be

.

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