1.

A plot of the kinetic energy ((1)/(2)mv^(2)) of ejected electrons as a function of the frequency (v) of incident radiation for four alkali metals (M_(1),M_(2),M_(3),M_(4)) is given below: The alkali metals M_(1),M_(2),M_(3),M_(4) are respectively:

Answer»

Li,NA,K and Rb
Rb,K,Na and Li
Na, K, Li and Rb
Rb, Li, Na and K

Solution :INTERCEPT on V-axis denotes `v_(0)`
`v_(0)=(phi)/(h)` where `phi`=work function of the metal.
Thus, GREATER is the value of `v_(0)`, more will be the work function of the metal.


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