In a photoelectric experiment for 4000 A° incident radiation, the potential difference to stop the ejection is 2 V. If the incident light is changed to 3000 A, then the potential required to stop the ejection of electron will be:
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a
2 V
b
Less than 2 V.
c
Zero
d
Greater than 2 V.
answer is D.
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Detailed Solution
According to Einstein's photoelectric equationV0=hce1λ-1λ0Hence if λ decreases V0 increases
In a photoelectric experiment for 4000 A° incident radiation, the potential difference to stop the ejection is 2 V. If the incident light is changed to 3000 A, then the potential required to stop the ejection of electron will be: