CBSE Class 12 Physics 2023 Delhi Set 2 Paper

Question : 3

Total: 11

Figure shows a plot of stopping potential (V0) versus ‌

, is the wavelength of the radiation causing photoelectric emission from a surface. The slope of the line is equal to

Solution: 👈: Video Solution

From Einstein's equation,
eV0‌=hv−hv0
or, V0‌=‌

−‌

hv0

‌‌[∵v=‌

]
or, V0‌=‌

λe

−‌

λ0e

So, the slope of V0 vs. 1∕λ graph is hc∕e.

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