Question:medium
Assertion (A): In photoelectric effect, the kinetic energy of the emitted photoelectrons increases with increase in the intensity of the incident light.
Reason (R): Photoelectric current depends on the wavelength of the incident light.
Assertion (A): In photoelectric effect, the kinetic energy of the emitted photoelectrons increases with increase in the intensity of the incident light.
Reason (R): Photoelectric current depends on the wavelength of the incident light.
Reason (R): Photoelectric current depends on the wavelength of the incident light.
Show Hint
Remember, in the photoelectric effect, the intensity of light affects the photoelectric current, while the frequency (or wavelength) of light determines the kinetic energy of the emitted electrons.
Updated On: Jan 13, 2026
- Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
- Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
- Assertion (A) is true, but Reason (R) is false.
- Assertion (A) is false and Reason (R) is also false.
Show Solution
The Correct Option is D
Solution and Explanation
The kinetic energy of photoelectrons emitted in the photoelectric effect is determined by the incident light's frequency (or wavelength), not its intensity, making Assertion (A) false. Photoelectric current is dependent on incident light intensity and independent of its wavelength, thus Reason (R) is also false.Consequently, the correct determination is:\[\boxed{\text{Assertion (A) is false and Reason (R) is also false.}}\]
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