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Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A photoelectric cell is illuminated by a point source of light $1 m$ away. When the source is shifted to $2 m$ then

Options:

Answer:

Solution:

Intensity of light source is

$I \propto \frac{1}{d^{2}}$

When distance is doubled, intensity becomes one-fourth.

As number of photoelectrons $\propto$ intensity, so number of photoelectrons is quarter of the initial number.

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Wave OpticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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