The work functions for metals 
and 
are respectively 1.92 
and 5 
According to Einstein’s equation the metals which will emit photoelectrons for a radiation of wavelength 4100 Å is/are
A
only
B
and 
only
C
all the three metals
D
none.
Text Solution
Verified by ExpertsThe correct answer is:
B
That metal will emit photoelectrons which has work function lower than that obtained with the radiation of 
Work function for wavelength of 
is
Now, we have
Since, 
and 
, hence, 
and 
will emit photoelectrons.
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