1.

In a photo emissive cell, with exciting wavelengthexciting wavelength is changed to 37/4 the kinetic energy of the fastest emitted electron will be(A) 3K/4, the maximum kinetic energy of electron is K. If the(C) less than 4K/3(B) 4K/3(D) greater than 4K/3d fixad ion A monochromatic

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