1
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

For a satellite orbiting around the earth in a circular orbit, the ratio of potential energy to kinetic energy at same height is

A
$$\frac{1}{\sqrt{2}}$$
B
$$\frac{1}{2}$$
C
$$\sqrt{2}$$
D
2
2
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Maximum kinetic energy of photon is '$$E$$' when wavelength of incident radiation is '$$\lambda$$'. If wavelength of incident radiations is reduced to $$\frac{\lambda}{3}$$ then energy of photon becomes four times. Then work function of the metal is

A
$$\frac{3 h c}{\lambda}$$
B
$$\frac{\mathrm{hc}}{3 \lambda}$$
C
$$\frac{h c}{\lambda}$$
D
$$\frac{\mathrm{hc}}{2 \lambda}$$
3
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Consider the Doppler effect in two cases. In the first case, an observer moves towards a stationary source of sound with a speed of $$50 \mathrm{~m} / \mathrm{s}$$. In the second case, the observer is at rest and the source moves towards the observer with the same speed of $$50 \mathrm{~m} / \mathrm{s}$$. Then the frequency heard by the observer will be

[velocity of sound in air $$=330 \mathrm{~m} / \mathrm{s}$$.]

A
same in both the cases.
B
more in the second case than in the first case.
C
less in the second case than in the first case.
D
less than the actual frequency in both the cases.
4
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

According to Curie's law in magnetism, the correct relation is ( $$\mathrm{M}=$$ magnetization in paramagnetic sample, $$\mathrm{B}=$$ applied magnetic field, $$\mathrm{T}=$$ absolute temperature of the material, $$\mathrm{C}=$$ curie's constant)

A
$$\mathrm{M}=\frac{\mathrm{T}}{\mathrm{CB}}$$
B
$$\mathrm{M=\frac{C B}{T}}$$
C
$$\mathrm{C}=\frac{\mathrm{MB}}{\mathrm{T}}$$
D
$$\mathrm{C}=\frac{\mathrm{T}^2}{\mathrm{MB}}$$
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