JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

1 Easy

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Understanding +4 | -1

Light of wavelength

(\lambda)

strikes a metal surface with intensity

X

and the metal emits

Y

electrons per second of maximum kinetic energy

Z

. What will happen to

Y

and

Z

X

is halved?

View answer and explanation

Correct option: C

Y

will be halved and

Z

will remain the same

Option C (

Y

will be halved and

Z

will remain the same) is correct because intensity is directly proportional to the number of electrons emitted (

Y

), while the maximum kinetic energy (

Z

) depends on the wavelength (energy) of the light, not its intensity.

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