In an experiment of photoelectric effect, the stopping potential was measured to be V1 and V2 volts with incident light of wavelength λ and λ / 2 respectively. The relation between V1 and V2 may be

Question

In an experiment of photoelectric effect, the stopping potential was measured to be V1 and V2 volts with incident light of wavelength λ and λ / 2 respectively. The relation between V1 and V2 may be (A) V2 < V1 (B) V1 < V2 < 2 V1 (C) V2 = 2 V1 (D) V2 > 2 V1

Tardigrade Admin · Accepted Answer

According to Einstein's photoelectric equation K max =h v-φ0 e Vs=(h c/λ)-φ0 ⇒ Vs=(h c/λ e)-(φ0/e) where, λ= Wavelength of incident light φ0= Work function Vs= Stopping potential According to given problem V1=(h c/λ e)-(φ0/e) ldots( i ) and V2=(h c/((λ)2) e)-(φ0/e) dots(ii) V2=(2 h c/λ e)-(φ0/e) =(2 h c/λ e)-(2 φ0/e)+(2 φ0/e)-(φ0/e) =2((h c/λ e)-(φ0/e))+(φ0/e) V2=2 V1+φ0 ∴ V2 > 2 V1 (Using (i))

Q. In an experiment of photoelectric effect, the stopping potential was measured to be $V_{1}$ and $V_{2}$ volts with incident light of wavelength $λ$ and $λ /2$ respectively. The relation between $V_{1}$ and $V_{2}$ may be

$V_{2} < V_{1}$

$V_{1} < V_{2} < 2 V_{1}$

$V_{2} = 2 V_{1}$

$V_{2} > 2 V_{1}$

Q. In an experiment of photoelectric effect, the stopping potential was measured to be V1​ and V2​ volts with incident light of wavelength λ and λ/2 respectively. The relation between V1​ and V2​ may be

V2​<V1​

V1​<V2​<2V1​

V2​=2V1​

V2​>2V1​

Q. In an experiment of photoelectric effect, the stopping potential was measured to be $V_{1}$ and $V_{2}$ volts with incident light of wavelength $λ$ and $λ /2$ respectively. The relation between $V_{1}$ and $V_{2}$ may be

$V_{2} < V_{1}$

$V_{1} < V_{2} < 2 V_{1}$

$V_{2} = 2 V_{1}$

$V_{2} > 2 V_{1}$