A point source of light is used in an experim | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) For a point source of light,the intensity $(I)$ of light incident on the emitter surface is inversely proportional to the square of the distance $

Vedclass · Accepted Answer

$d$

Vedclass · Answer

(D) For a point source of light,the intensity $(I)$ of light incident on the emitter surface is inversely proportional to the square of the distance $(d)$ from the source,i.e.,$I \propto \frac{1}{d^2}$.According to the photoelectric effect,the photocurrent $(i)$ is directly proportional to the intensity $(I)$ of the incident light,i.e.,$i \propto I$.Combining these two relations,we get $i \propto \frac{1}{d^2}$.This represents a rectangular hyperbola-like curve where the photocurrent decreases rapidly as the distance increases. Among the given options,curve $d$ best represents this inverse square relationship.

$A$ point source of light is used in an experiment on the photoelectric effect. Which of the following curves best represents the variation of photocurrent $(i)$ with distance $(d)$ of the source from the emitter?

Similar Questions

The curves $(1)$,$(2)$,$(3)$,and $(4)$ show the variation between the applied potential difference $(V)$ and the photoelectric current $(i)$ at two different intensities of light $(I_1 > I_2)$. In which figure is the correct variation shown?

Threshold frequency for a metal is $15 \times 10^{14} \,Hz$. The light of wavelength $6000 \text{ Å}$ falls on the metal surface. Which one of the following statements is correct? [velocity of light, $c = 3 \times 10^{8} \,m/s$]

Which of the following is dependent on the intensity of incident radiation in a photoelectric experiment?

The minimum energy required to remove an electron from the surface of a metal is called:

Vedclass Test Series

Exam Paper Generator

Online Exam Module