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

A $60\,\mu F$ capacitor is charged to $100\,volts$ . This charged capacitor is connected across a $15\,mH$ coil, So that $LC$ oscillations occur. Maximum current in the coil is

Suppose, the electron in a hydrogen atom makes transition from $n = 3$ to $n = 2$ in $10^{-8}s$. The order of the torque acting on the electron in this period, using the relation between torque and angular momentum as discussed in the chapter on rotational mechanics is:

If the number of electric lines of force emerging out of a closed surface is $1000$ , then the charge enclosed by the surface is .......... $C$

The two thin coaxial rings, each of radius $'a'$ and having charges $+{Q}$ and $-{Q}$ respectively are separated by a distance of $'s'.$ The potential difference between the centres of the two rings is :

$A$ object is placed at a distance of $15\,cm$ from a convex lens of focal length $10\,cm$. On the other side of the lens, a convex mirror is placed at its focus such that the image formed by the combination coincides with the object itself. The focal length of the convex mirror is.....$cm$

In a zener diode, break down occurs in reverse bias due to

$1000$ small water drops each of radius $r$ and charge $q$ coalesce together to form one spherical drop. The potential of the big drop is larger than that of the smaller drop by a factor of

Thomson coefficient of a conductor is 10μV/K. The two ends of it are kept at 50℃ and 60℃ respectively. Amount of heat absorbed by the conductor when a charge of 10C flows through it is

Assertion : The quantity L/R possesses dimensions of time.
Reason : To reduce the rate of increases of current through a solenoid should increase the time constant (L/R).

Two sine waves travel in the same direction in a medium. The amplitude of each wave is $A$ and the phase difference between the two waves is $120^\circ$. The resultant amplitude will be: