1.

In a black body radiation at certain temperature T_1 the wave length having maximum intensity of radiation equals 9000A^@ . When the temperature is increased from T_1 "to" T_2 the total radiation increases 16 times. The peak radiation at T_2 is found to be capable of ejecting photoelectrons. The maximum kinetic energy of photoelectrons is the same as the energy of photon that one gets when one of electron in the M -shall of hydrogen atom jumps to L-shell the work function of the metal will be

Answer»

0.88 eV
1.5 eV
2.0 eV
1.2 eV

Answer :A


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