1
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A body of density $$V$$ is dropped from (at rest) height '$$h$$' into a lake of density '$$\delta$$' $$(\delta > \rho)$$. The maximum depth to which the body sinks before returning to float on the surface is [Neglect all dissipative forces]

A
$$\frac{(\delta-\rho)}{2 h \rho}$$
B
$$\frac{2 h \rho}{(\delta-\rho)}$$
C
$$\frac{h \rho}{2(\delta-\rho)}$$
D
$$\frac{h \rho}{(\delta-\rho)}$$
2
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The surface energy of a liquid drop is 'U'. It splits up into 512 equal droplets. The surface energy becomes

A
8 U
B
6 U
C
4 U
D
2 U
3
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Air is pushed in a soap bubble to increase its radius from 'R' to '2R'. In this case, the pressure inside the bubble

A
does not change
B
decrease
C
becomes zero
D
increases
4
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Let '$$\mathrm{R_1}$$' and '$$\mathrm{R_2}$$' are radii of two mercury drops. A big mercury drop is formed from them under isothermal conditions. The radius of the resultant drop is

A
$$\sqrt{\mathrm{R}_1^2+\mathrm{R}_2^2}$$
B
$$\left(\mathrm{R}_1^3+\mathrm{R}_2^3\right)^{\frac{1}{3}}$$
C
$$\sqrt{\mathrm{R}_1^2-\mathrm{R}_2^2}$$
D
$$\frac{\mathrm{R}_1+\mathrm{R}_2}{2}$$
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
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