Assertion - Photosensitivity of a metal is high if its work function is small- Reason - Work function hf 0 where f 0 is the threshold frequency-A- Both assertion and reason are true but reason is not the correct explanation of the assertion-B- Assertion is false but reason is true-C- Assertion and reason both are false-D- Assertion is true but reason is false-E- Both assertion and reason are true and the reason is the correct explanation of the assertion-

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Byju's Answer

Standard XII

Chemistry

System, Surroundings, Intensive, Extensive Properties

Assertion : P...

Question

Assertion : Photosensitivity of a metal is high if its work function is small.
Reason : Work function $h f_{0}$ where $f_{0}$ is the threshold frequency.

Both assertion and reason are true and the reason is the correct explanation of the assertion.

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Both assertion and reason are true but reason is not the correct explanation of the assertion.

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Assertion is true but reason is false.

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Assertion and reason both are false.

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Assertion is false but reason is true.

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Solution

The correct option is B
Both assertion and reason are true but reason is not the correct explanation of the assertion.

Less work function means less energy is required for ejecting out the electrons.

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Assertion : Photosensitivity of a metal is high if its work function is small. Reason : Work function hf0 where f0 is the threshold frequency.

The correct option is B Both assertion and reason are true but reason is not the correct explanation of the assertion. Less work function means less energy is required for ejecting out the electrons.

Assertion : Photosensitivity of a metal is high if its work function is small.
Reason : Work function $h f_{0}$ where $f_{0}$ is the threshold frequency.

The correct option is B
Both assertion and reason are true but reason is not the correct explanation of the assertion.

Less work function means less energy is required for ejecting out the electrons.