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Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material .If the frequency is halved and the intensity is doubled, the photoelectric current becomes
- a)Doubled
- b)Quadrupled
- c)Halved
- d)zero
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Light of frequency 1.5 times the threshold frequency is incident on a ...
If the frequency is halved and intensity is doubled, the frequency of incident light will become 15/2 = 0.75 times the threshold frequency. So, as ν<νo Hence, photoelectric current will be zero.
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Light of frequency 1.5 times the threshold frequency is incident on a ...
Explanation:
The photoelectric current is the flow of electrons from the photosensitive material when it is exposed to light. The intensity and frequency of the incident light affect the photoelectric current.
Threshold Frequency: The threshold frequency is the minimum frequency of light required to cause the emission of electrons from the photosensitive material.
1.5 times the Threshold Frequency: When light of frequency 1.5 times the threshold frequency is incident on the photosensitive material, electrons are emitted from the material.
Halving the Frequency: When the frequency of the incident light is halved, the frequency becomes less than the threshold frequency. Hence, no electrons are emitted from the material.
Doubling the Intensity: Even if the intensity of the incident light is doubled, the photoelectric current remains zero as the frequency is below the threshold frequency.
Conclusion: Hence, the correct answer is option 'D' - zero.
The photoelectric current is the flow of electrons from the photosensitive material when it is exposed to light. The intensity and frequency of the incident light affect the photoelectric current.
Threshold Frequency: The threshold frequency is the minimum frequency of light required to cause the emission of electrons from the photosensitive material.
1.5 times the Threshold Frequency: When light of frequency 1.5 times the threshold frequency is incident on the photosensitive material, electrons are emitted from the material.
Halving the Frequency: When the frequency of the incident light is halved, the frequency becomes less than the threshold frequency. Hence, no electrons are emitted from the material.
Doubling the Intensity: Even if the intensity of the incident light is doubled, the photoelectric current remains zero as the frequency is below the threshold frequency.
Conclusion: Hence, the correct answer is option 'D' - zero.
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Light of frequency 1.5 times the threshold frequency is incident on a ...
If the frequency is halved and intensity is doubled, the frequency of incident light will become 15/2 = 0.75 times the threshold frequency. Hence, photoelectric current will be zero.
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Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material .If the frequency is halved and the intensity is doubled, the photoelectric current becomesa)Doubledb)Quadrupledc)Halvedd)zeroCorrect answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material .If the frequency is halved and the intensity is doubled, the photoelectric current becomesa)Doubledb)Quadrupledc)Halvedd)zeroCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material .If the frequency is halved and the intensity is doubled, the photoelectric current becomesa)Doubledb)Quadrupledc)Halvedd)zeroCorrect answer is option 'D'. Can you explain this answer?.
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