1
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
2
MHT CET 2024 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

When a metallic surface is illuminated with a radiation of wavelength ' $\lambda$ ', the stopping potential is ' $V$ '. If the same surface is illuminated with radiation of wavelength ' $3 \lambda$ ', the stopping potential is ' $\left(\frac{\mathrm{V}}{6}\right)$ '. The threshold wavelength for the surface is

A
$3 \lambda$
B
$4 \lambda$
C
$5 \lambda$
D
$6 \lambda$
3
MHT CET 2024 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The work function of metal ' $A$ ' and ' $B$ ' are in the ratio $1: 2$. If light of frequency ' $f$ ' and ' $2 f$ ' is incident on surface ' $A$ ' and ' $B$ ' respectively, then the ratio of kinetic energies of emitted photo electrons is

A
$1: 1$
B
$1: 2$
C
$1: 3$
D
$1: 4$
4
MHT CET 2023 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When radiation of wavelength '$$\lambda$$' is incident on a metallic surface, the stopping potential is 4.8 V. If the surface is illuminated with radiation of double the wavelength then the stopping potential becomes $$1.6 \mathrm{~V}$$. The threshold wavelength for the surface is

A
$$2 \lambda$$
B
$$4 \lambda$$
C
$$6 \lambda$$
D
$$8 \lambda$$
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