1
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of the wavelength of a photon of energy ' $E$ ' to that of the electron of same energy is ( $\mathrm{m}=$ mass of an electron, $\mathrm{c}=$ speed of light, $\mathrm{h}=$ Planck's constant)

A
$\sqrt{\frac{\mathrm{m}}{\mathrm{cE}}}$
B
$\sqrt{\frac{2 \mathrm{~m}}{\mathrm{cE}}}$
C
$c \sqrt{\frac{\mathrm{~m}}{\mathrm{E}}}$
D
$c \sqrt{\frac{2 m}{E}}$
2
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

When photons of energy hv fall on a photosensitive surface of work function $\mathrm{E}_0$, photoelectrons of maximum energy $k$ are emitted. If the frequency of radiation is doubled the maximum kinetic energy will be equal to ( $\mathrm{h}=$ Planck's constant)

A
k
B
2 k
C
$\mathrm{k}+\mathrm{E}_0$
D
$\mathrm{k}+\mathrm{h} \nu$
3
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The number of photoelectrons emitted for light of frequency $v$ (higher than the threshold frequency $\left(v_0\right)$ is proportional to

A
threshold frequency $\left(v_0\right)$
B
intensity of light (I)
C
frequency of light (v)
D
work function $\left(\phi_0\right)$
4
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The stopping potential for a photelectric emission process is 10 V . The maximum kinetic energy of the electrons ejected in the process is [Charge on electron $\mathrm{e}=1.6 \times 10^{-19} \mathrm{C}$ ]

A
$3.2 \times 10^{-19} \mathrm{~J}$
B
$1.6 \times 10^{-19} \mathrm{~J}$
C
$1.6 \times 10^{-18} \mathrm{~J}$
D
0 J
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