When the intensity of light falling on a surface producing photoe… - Vidyadip

MCQ

When the intensity of light falling on a surface producing photoelectric effect is doubled, then :

A
The frequency of the emitted photon will double.
✓
Twice as many photons will be released.
C
Four times more photons will be emitted than before.
D
There is no effect.

✓

Answer

Correct option: B.

Twice as many photons will be released.

(B) - Twice as many photons will be released.

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 Dual Nature of Radiation and Matter→Dual Nature of Radiation and Matter — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

A galvanometer whose resistance is $120\,\Omega $ gives full scale deflection with a current of $0.05\, A$ so that it can read a maximum current of $10\, A$. A shunt resistance is added in parallel with it. The resistance of the ammeter so formed is .............. $\Omega $

A body has $-\, 80$ $micro\, coulomb$ of charge. Number of additional electrons in it will be

Letters $A , B , C$ and $D$ are written on a cardboard as shown in the figure below. The cardboard is kept at a suitable distance behind a transparent empty glass of cylindrical shape. If the glass is now filled with water, one sees an inverted image of the pattern on the cardboard when looking through the glass. Ignoring magnification effects, the image would appear as

The intrinsic semiconductor becomes an insulator at

Red light is used as danger signal because it is:

In the arrangement shown in given Figure, there are two coils wound on a non$-$conducting cylindrical rod. Initially the key is not inserted. Then the key is inserted and later removed. Then,

An unknown resistance $R_1$ is connected in series with a resistance of $10 W$ . This combinations is connected to one gap of a metre bridge while a resistance $R_2$ is connected in the other gap. The balance point is at $50 \ cm$ . Now, when the $10 W$ resistance is removed the balance point shifts to $40 \ cm$ . The value of $R_1$ is $($in ohm$)$

The magnetic field $d\overrightarrow B $ due to a small current element $d\overrightarrow {l\,} $ at a distance $\overrightarrow {r\,} $ and element carrying current $i$ is

For photoelectric emission from certain metal the cutoff frequency is $\nu$. If radiation of frequency $2\nu$ impinges on the metal plate, the maximum possible velocity of the emitted electron will be ($m$ is the electron mass)

An $AC$ source is rated $220V, 50Hz$. The average voltage is calculated in a time interval of $0.01s$, It :