Given below are two statements : Statement I : Stopping potential… - Vidyadip

MCQ

Given below are two statements :

Statement $I :$ Stopping potential in photoelectric effect does not depend on the power of the light source.

Statement $II :$ For a given metal, the maximum kinetic energy of the photoelectron depends on the wavelength of the incident light.

In the light of above statements, choose the most appropriate answer from the options given below.

Options :

A
Statement $I$ is incorrect but statement $II$ is correct
B
Both Statement $I$ and Statement $II$ are incorrect
C
Statement $I$ is correct but statement $II$ is incorrect
✓
Both statement $I$ and statement $II$ are correct

✓

Answer

Correct option: D.

Both statement $I$ and statement $II$ are correct

d
Stopping potential $V _{ S }=\frac{ KE _{\max }}{ e }$

$V _{ S }=\frac{\frac{ hC }{ \lambda }-\phi}{ e }$

Stopping potential does not depend on intensity or power of light used, it only depends on frequency or wavelength of incident light.

So both statements $I$ and $II$ are correct

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 11. Dual nature of radiation and matter→11. Dual nature of radiation and matter — all question types→Physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The efficiency of transformer is very high because

If the forward voltage in a semiconductor diode is doubled, the width of the depletion layer will

Operational amplifier is a

In a medium of dielectric constant $K$, the electric field is $\vec E$ . If ${ \varepsilon _0}$ is permittivity of the free space, the electric displacement vector is

$f_v$ and $f_r$ are the focal lengths of a convex lens for violet and red light respectively and $F_v$ and $F_r$ are the focal lengths of a concave lens for violet and red light respectively, then

In a junction diode, the holes are due to

Direction of the first secondary maximum in the Fraunhofer diffraction pattern at a single slit is given by ($a$ is the width of the slit)

In the circuit shown below, the cell has an $e.m.f.$ of $10\,V$ and internal resistance of $1\, ohm$. The other resistances are shown in the figure. The potential difference ${V_A} - {V_B}$ is ................ $V$

A long straight wire of circular cross section of radius'a carries a steady current $1$. The current is uniformly distributed across its cross section. The ratio of magnitudes of the magnetic field at a point $a/2$ above the surface of wire to that of a point a $2$ below its surface is

In a $CE$ transistor amplifier, the audio signal voltage across the collector resistance of $2\,k\Omega $ is $2\,V$. If the base resistance is $1\,k\Omega $ and the current amplification of the transistor is $100$, the input signal voltage is