1
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
$$8 \lambda$$
2
MHT CET 2023 14th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The de-Broglie wavelength $$(\lambda)$$ of a particle is related to its kinetic energy (E) as

A
$$\lambda \propto \mathrm{E}$$
B
$$\lambda \propto \mathrm{E}^{-1}$$
C
$$\lambda \propto \mathrm{E}^{\frac{1}{2}}$$
D
$$\lambda \propto \mathrm{E}^{-\frac{1}{2}}$$
3
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Dual nature of light is exhibited by

A
diffraction as well as photoelectric effect
B
diffraction as well as reflection
C
refraction as well as interference
D
photoelectric effect
4
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

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

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