1
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A body is executing S.H.M. under the action of force having maximum magntude $$50 \mathrm{~N}$$. When its energy is half kinetic and half potential; the magnitude of the force acting on the particle is

A
$$\frac{25}{\sqrt{2}} \mathrm{~N}$$
B
$$50 \mathrm{~N}$$
C
$$25 \mathrm{~N}$$
D
$$25 \sqrt{2} \mathrm{~N}$$
2
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The peak value of an alternating emf '$$\mathrm{e}$$' given by $$\mathrm{e}=\mathrm{e}_0 \cos \omega \mathrm{t}$$ is 10 volt and its frequency is $$50 \mathrm{~Hz}$$. At time $$\mathrm{t}=\frac{1}{600} \mathrm{~s}$$, the instantaneous e.m.f is $$\left(\cos \frac{\pi}{6}=\sin \frac{\pi}{3}=\frac{\sqrt{3}}{2}\right)$$

A
$$10 \mathrm{~V}$$
B
$$\frac{1}{\sqrt{3}} \mathrm{~V}$$
C
$$5 \mathrm{~V}$$
D
$$5 \sqrt{3} \mathrm{~V}$$
3
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The wavelength of sound in any gas depends upon

A
intensity of sound waves only
B
wavelength of sound only
C
density and elasticity of the gas
D
amplitude and frequency of sound
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