The threshold frequency of metals `4 x 10^(14) s^(-1)` The minimum energy which photons must possess to produce photoelectric effect with the metal is
The threshold frequency of metals `4 x 10^(14) s^(-1)` The minimum energy which photons must possess to produce photoelectric effect with the metal is `(h=6.6 xx 10^(-34) Js)`
A. `3.06 xx 10^(-12) J`
B. `1.4 xx 10^(-48) J`
C. `3.4 xx 10^(-19) J`
D. `2.64 xx 10^(-19) J`
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Correct Answer - D
Threshold energy required for emission
`=hv_0 = 6.6 xx 10 ^(-34) xx 4 xx 10^14`
`=2.64xx10^(-19)` J
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