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The collector of the photocell (in photo...

The collector of the photocell (in photoelectirc experiment) is made of tungstan while the emiiter is of platinum having work function of `10eV`. Moochromatic rediation of wavelength 124 Å and power 100 watt is incident on emitter which emits photo elelctrons with a quantum effciency of `1%`. The accelerating voltage across the photocell is of 10,000 volts (Use: `h_(c)=12400eVÅ`)

The minimum wavelength os radiation coming from the tungsten target (collector) is

A

`1%`

B

`0.1%`

C

`1.5%`

D

`0.67%`

Text Solution

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The correct Answer is:
A
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