Home Maths JEE - Advanced Previous Year Paper JEE-Advanced-2016-Paper-2 Light of wavelength falls on a cathode plat…
Maths JEE - Advanced Previous Year Paper JEE-Advanced-2016-Paper-2 Single Correct MCQ
Published on: August 13, 2026

Light of wavelength falls on a cathode plate inside a vacuum tube as shown in the figure. The work function of the cathode surface is and the anode is a wire mesh of conducting material kept at a distance d from the cathode. A potential difference V is maintained between the electrodes. If the minimum de Broglie wavelength of the electrons passing through the anode is , which of the following statement(s) is(are) true?

A
For large potential difference is approximately halved if V is made four times
B
increases at the same rate as for
C
is approximately halved, if d is doubled
D
decreases with increase in and

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Text Solution

Verified by Experts
The correct answer is:
A

Equation Becomes

For

and

when V is made four times is halved.

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