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JEE MAIN 2020
09-01-20 S1
Question
Radiation, with wavelength 6561 Å falls on a metal surface to produce photoelectrons. The electrons are made to enter a uniform magnetic field of $3 \times 10^{-4} \mathrm{~T}$. If the radius of the largest circular path followed by the electrons is 10 mm , the work function of the metal is close to
Select the correct option:
A
1.6 eV
B
1.1 eV
C
0.8 eV
D
1.8 eV
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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