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:

Options

A. Li,Na,K and Rb
B. Rb,K,Na and Li
C. Na, K, Li and Rb
D. Rb, Li, Na and K

Answer

B

Explanation

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.