1
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A body falls on a surface of coefficient of restitution 0.6 from a height of $$1 \mathrm{~m}$$. Then the body rebounds to a height of

A
1 m
B
0.36 m
C
0.4 m
D
0.6 m
2
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In a diffraction pattern due to single slit of width '$$a$$', the first minimum is observed at an angle of $$30^{\circ}$$ when the light of wavelength $$5400 \mathop A\limits^o$$ is incident on the slit. The first secondary maximum is observed at an angle of $$\left(\sin 30^{\circ}=\frac{1}{2}\right)$$

A
$$\sin ^{-1}\left(\frac{3}{4}\right)$$
B
$$\sin ^{-1}\left(\frac{2}{3}\right)$$
C
$$\sin ^{-1}\left(\frac{1}{2}\right)$$
D
$$\sin ^{-1}\left(\frac{1}{4}\right)$$
3
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A stone is projected vertically upwards with speed '$$v$$'. Another stone of same mass is projected at an angle of $$60^{\circ}$$ with the vertical with the same speed '$$v$$'. The ratio of their potential energies at the highest points of their journey is $$\left[\sin 30^{\circ}=\cos 60^{\circ}=0.5, \cos 30^{\circ}=\sin 60^{\circ}=\frac{\sqrt{3}}{2}\right]$$

A
$$4: 1$$
B
$$2: 1$$
C
$$3: 2$$
D
$$1: 1$$
4
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

An electron (mass $$\mathrm{m}$$ ) is accelerated through a potential difference of '$$V$$' and then it enters in a magnetic field of induction '$$B$$' normal to the lines. The radius of the circular path is ($$\mathrm{e}=$$ electronic charge)

A
$$\sqrt{\frac{2 \mathrm{eV}}{\mathrm{m}}}$$
B
$$\sqrt{\frac{2 \mathrm{Vm}}{\mathrm{eB}^2}}$$
C
$$\sqrt{\frac{2 V m}{e B}}$$
D
$$\sqrt{\frac{2 V m}{\mathrm{e}^2 \mathrm{~B}}}$$
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