1
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Four massless springs whose force constants are $$2 \mathrm{~K}, 2 \mathrm{~K}, \mathrm{~K}$$ and $$2 \mathrm{~K}$$ respectively are attached to a mass $$\mathrm{M}$$ kept on a frictionless plane as shown in figure, If mass $$M$$ is displaced in horizontal direction then frequency of oscillating system is

MHT CET 2023 12th May Morning Shift Physics - Simple Harmonic Motion Question 38 English

A
$$\frac{1}{2 \pi} \sqrt{\frac{\mathrm{K}}{4 \mathrm{M}}}$$
B
$$\frac{1}{2 \pi} \sqrt{\frac{4 \mathrm{~K}}{\mathrm{M}}}$$
C
$$\frac{1}{2 \pi} \sqrt{\frac{\mathrm{K}}{7 \mathrm{M}}}$$
D
$$\frac{1}{2 \pi} \sqrt{\frac{7 \mathrm{~K}}{\mathrm{M}}}$$
2
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

About black body radiation, which of the following is the wrong statement?

A
For all wavelengths, intensity is same.
B
For shorter wavelengths, intensity is more.
C
For longer wavelengths, intensity is less.
D
All wavelengths are emitted by a black body.
3
MHT CET 2023 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two coils have a mutual inductance of $$0.004 \mathrm{~H}$$. The current changes in the first coil according to equation $$\mathrm{I}=\mathrm{I}_0 \sin \omega \mathrm{t}$$, where $$\mathrm{I}_0=10 \mathrm{~A}$$ and $$\omega=50 ~\pi \mathrm{~rad} ~\mathrm{s}^{-1}$$. The maximum value of e.m.f. in the second coil in volt is

A
$$5 \pi$$
B
$$4 \pi$$
C
$$2.5 \pi$$
D
$$2 \pi$$
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