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A plot of the kinetic energy ((1)/(2) mv...

A plot of the kinetic energy `((1)/(2) mv^(2))` of ejected electrons as a function of the frequency `(upsilon)` 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.

A

Li, Na, K and Rb

B

Rb, K, Na and Li

C

Na, K, Li and Rb

D

Rb, Li, Na and K

Text Solution

Verified by Experts

The correct Answer is:
B
Intercept on `upsilon`-axis denotes `upsilon_(0)`.
`upsilon_(0)=(phi)/(h)` where `phi=` work function of the metal
Thus, greater is the value of `upsilon_(0)`, more will be the work function of the metal.
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