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The anode voltage of a photocell is kept fixed. The wavelength
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The anode voltage of a photocell is kept fixed. The wavelength of the light falling on the cathode is gradually changed. The plate current of the photocell varies as follows
Photoelectric effect
Photoelectric effect
Photoelectric effect
(d) None of these

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Updated on: Dec 11, 2023

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Arihant Physics JEE Main Chapterwise Solutions (2019-2002) (Arihant)

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JEE Mains 2006

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The anode voltage of a photocell is kept fixed. The wavelength of the light falling on the cathode is gradually changed. The plate current of the photocell varies as follows
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(d) None of these
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According to the photoelectric effect in a photocell, if a light of wavelength is incident on a cathode, then electrons are emitted, which constitute the photoelectric current.

Photocell is based on the principle of photoelectric effect. As the wavelength of light changes, there is no change in number of electrons emitted and hence, no change in current (plate current of photocell). Thus, the two wavelength of incident light and plate current are independent to each other.

Plate current depends on intensity of light used. Hence option (d) is true.
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Question Text
The anode voltage of a photocell is kept fixed. The wavelength of the light falling on the cathode is gradually changed. The plate current of the photocell varies as follows



(d) None of these
Updated OnDec 11, 2023
TopicDual Nature of Radiation and Matter
SubjectPhysics
ClassClass 12
Answer TypeText solution:1 Video solution: 4
Upvotes453
Avg. Video Duration4 min