1
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

For a photosensitive material, work function is ' $\mathrm{W}_0$ ' and stopping potential is ' V '. The wavelength of incident radiation is ( $\mathrm{h}=$ Planck's constant, $c=$ velocity of light, $e=$ electronic charge)

A
$\frac{h^2 c^2}{W_0+e V}$
B
$\frac{\mathrm{hc}}{\mathrm{W}_0}$
C
$\frac{\mathrm{hcV}}{\mathrm{W}_0}$
D
$\frac{\mathrm{hc}}{\mathrm{W}_0+\mathrm{eV}}$
2
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The graph of stopping potential ' $\mathrm{V}_{\mathrm{s}}$ ' against frequency ' $v$ ' of incident radiation is plotted for two different metals ' X ' and ' Y ' as shown in graph. ' $\phi_x$ ' and ' $\phi_y$ ' are work functions of ' $x$ ' and ' $Y$ ' respectively then

MHT CET 2024 3rd May Evening Shift Physics - Dual Nature of Radiation Question 51 English

A
$\phi_x=\phi_y$
B
$\phi_x<\phi_y$
C
$\phi_x>\phi_y$
D
$\phi_x=\phi_y=0$
3
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The frequency of incident light falling on a photosensitive material is doubled, the K.E. of the emitted photoelectrons will be

A
unchanged.
B
two times its initial value.
C
more than two times its initial value.
D
less than two times its initial value.
4
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When the electron orbiting in hydrogen atom in its ground state moves to the third excited state, the de-Broglie wavelength associated with it

A
becomes zero.
B
remains unchanged.
C
will decrease.
D
will increase.
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