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A metal surace objects electrons when hi...

A metal surace objects electrons when hit by green light but none when hit by yellow light .The electrons will be ejected when the surface is hit by…….

A

blue light

B

heat rays

C

infrared rays

D

red light

Text Solution

Verified by Experts

The correct Answer is:
A
`lambda_("blue")lt "yellow"`
`(1)/(2)m_(max)^(2)=hf-phi=hf-hf_(0)`
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