Question

Ultraviolet light of wavelength 830 Å and 700 Å when
allowed to fall on hydrogen atom in their ground
state is found to liberate electrons with kinetic energy
1.8 eV and 4.0 eV respectively. Find the value of
planck's constant.
(A) 8.97 x 10-34 J-s
(B) 6.34 x 10-34 J-s
(C) 6.57 x 10-34 J-s
(D) None​

Answer 1

Answer:

the answer is the option c

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