Question 27

XL-PNAT2 marksNeeds review
A 16 mW monochromatic light emits

photons in 1 second. When this light incidents on a metal strip, photoelectrons are emitted. The wavelength of the emitted photoelectrons (in Å) is ______ (round off to one decimal place).
Given: Work function of the metal = 2.0 eV
Charge of an electron =

C
Mass of an electron =

kg
Planck’s constant =

J s

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2022XL-P

GATE XL 2022 · Paper 1

Life Sciences · Original paper archive

Section
Section XL-P
Question type
Numerical answer (NAT)
Marks
2 marks

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