Solve this: 11 The work functions of three metals A, B and C are WA,WB and WC respectively - Physics - Nuclei

Question

Solve this:

11 The work functions of three metals A, B and C are
WA,WB and WC respectively They are
in the decreasing order The correct graph between kinetic energy
and frequency V of incident radiation is

12 The energy released during the fission of 1 kg of
U235 is E1 and the produced during the fusion
of 1 kg of hydrogen is E2 If energy released per fission
of uranium-235 is 200 MeV and that per fusion of hydrogen is 24 7
MeV then the ratio E 2 E 1 is

(a) 2 (b) 7
(c) 10 (d) 20

Shobhit Mittal · Accepted Answer

solving 11
post other question in different threadthe graph is between the KE and the frequency of incident radiatin 
in the descending order WA>WB>Wcthe higher the work function the larger the intercept on the frequency axis
so it can be graph b and dbut in graph d the slope of the curve is different for three curves but it must be same 
hence option B is correctRegards