NEET Physics Question - Modern Physics - Photoelectric Effects and deBroglie Equation

Assertion (A): Work function of a metal increases with increase in intensity of incident light.

Reason (R): Maximum kinetic energy of ejected photoelectrons depends upon the intensity of incident light.

(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)

(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(3) (A) is true but (R) is false

(4) Both (A) and (R) are false

Assertion (A) is false: Work function is a characteristic property of the metal and is independent of light intensity.

Reason (R) is false: Maximum kinetic energy depends on frequency, not intensity. Both statements are false.

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