
Grade 11Modern Physics
The wavelength of photons in two cases are 4000 A
The wavelength of photons in two cases are 4000 A and 3600 A respectively what is difference in stopping potential for these two? (Give solution using formula)

A Converging bundle of light rays in the shape of cone with a vertex angle of 45° falls on a circular diaphragm of 20 cm diameter. A lens with power 5D is fixed in the diaphragm. Diameter of face of lens is equal ot that of diaphragm. If the vertex angle of new cone is 0, then tane =
(A) 1.5
(B) 2
(C) 3
(D) 1
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Last Activity: 4 Years ago

Last Activity: 4 Years ago