Book Online Demo

Check Your IQ

Try Test

Courses

Offline Centres

If the wavelength of the incident radiation changes from λ₁ to λ₂ , then the maximum kinetic energy of the emitted photo electrons changes from K₁ to K₂, then the work function of the emitter surface is

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

$frac{{{lambda _1}{K_1} - {lambda _2}{K_2}}}{{{lambda _2} - {lambda _1}}}$

$frac{{{lambda _1}{K_2} - {lambda _2}{K_1}}}{{{lambda _1} - {lambda _2}}}$

$frac{{{K_2} - {K_1}}}{{{lambda _1}{K_1} - {lambda _2}{K_2}}}$

$frac{{{lambda _2} - {lambda _1}}}{{{lambda _2}{K_1} - {lambda _1}{K_2}}}$

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

$E = {W_0} + K{E_{max ;}}$

$therefore frac{{hc}}{lambda } = {W_o} + K{E_{max }}$

$therefore hc = lambda {W_o} + Klambda$

$therefore lambda {W_o} + Klambda = constan t.$

$therefore {lambda _1}{W_o} + {K_1}{lambda _1} = {lambda _2}{W_o} + {K_2}{lambda _2}$

$therefore {W_o} = frac{{{lambda _1}{K_1} - {lambda _2}{K_2}}}{{{lambda _2} - {lambda _1}}}$

JEE

NEET

Foundation JEE

Foundation NEET

CBSE