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

Pressure inside two soap bubbles are 1.01 atm and 1.03 atm. The ratio between their volumes is (Pressure outside the soap bubble is 1 atmosphere)

A
9 : 1
B
27 : 1
C
81 : 1
D
3 : 1
2
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The length and diameter of a metal wire used in sonometer is doubled. The fundamental frequency will change from 'n' to

A
$$\frac{n}{4}$$
B
2n
C
2n
D
$$\frac{n}{2}$$
3
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

An alternating e.m.f. is $$\mathrm{e}=\mathrm{e}_0 \sin \omega \mathrm{t}$$. In what time the e.m.f. will have half its maximum value, if '$$\mathrm{e}$$' starts from zero? ($$\mathrm{T}=$$ time period, $$\sin 30^{\circ}=0.5$$)

A
$$\frac{\mathrm{T}}{12}$$
B
$$\mathrm{\frac{T}{16}}$$
C
$$\frac{\mathrm{T}}{4}$$
D
$$\mathrm{\frac{T}{8}}$$
4
MHT CET 2021 24th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A ray of light is incident on one face of an equilateral glass prism having refractive index $$\sqrt{2}$$. It produces the emergent ray which just. grazes along the adjacent face. The value of angle of incidence is $$\left(\sin 45^{\circ}=\cos 45^{\circ}=\frac{1}{\sqrt{2}}\right)$$

A
$$\sin ^{-1}\left(\frac{1}{\sqrt{2}} \sin 15^{\circ}\right)$$
B
$$\sin ^{-1}\left(\sqrt{2} \sin 30^{\circ}\right)$$
C
$$\sin ^{-1}\left(\frac{1}{\sqrt{2}} \sin 45^{\circ}\right)$$
D
$$\sin ^{-1}\left(\sqrt{2} \sin 15^{\circ}\right)$$
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