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Byju's Answer
Standard VIII
Biology
Product of two numbers = HCF x LCM
The electrons...
Question

The electrons are emitted in the photoelectric effect from a metal surface


A

Only if the frequency of the incident radiation is above a certain threshold value

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B

Only if the temperature of the surface is high

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C

At a rate that is independent of the nature of the metal

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D

With a maximum velocity proportional to the frequency of the incident radiation

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Solution

The correct option is A

Only if the frequency of the incident radiation is above a certain threshold value


Refer to threshold frequency.


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Q. The electrons are emitted in the photoelectric effect from a metal surface

Only if the frequency of the incident radiation is above a certain threshold value

  • Only if the temperature of the surface is high

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