1
MHT CET 2021 21th September Evening Shift
+1
-0

A big water drop is divided into 8 equal droplets. $$\Delta \mathrm{P}_{\mathrm{s}}$$ and $$\Delta \mathrm{P}_{\mathrm{B}}$$ be the excess pressure inside a smaller and bigger drop respectively. The relation between $$\Delta \mathrm{P}_{\mathrm{s}}$$ and $$\Delta \mathrm{P}_{\mathrm{B}}$$ is

A
$$\Delta P_B=\Delta P_S$$
B
$$\Delta \mathrm{P}_{\mathrm{B}}=\frac{1}{2} \Delta \mathrm{P}_{\mathrm{S}}$$
C
$$\Delta P_B=\frac{1}{4} \Delta P_S$$
D
$$\Delta P_B=2 \Delta P_S$$
2
MHT CET 2021 21th September Morning Shift
+1
-0

The surface tension of most of the liquid decreases with rise in

A
viscosity of the liquid
B
diameter of capillary
C
temperature of the liquid
D
density of the liquid
3
MHT CET 2021 21th September Morning Shift
+1
-0

The velocity of a small ball of mass '$$M$$' and density '$$\mathrm{d}_1$$' when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is '$$\mathrm{d}_2$$', the viscous force acting on the ball is ( $$\mathrm{g}=$$ acceleration due to gravity)

A
$$\mathrm{Mg} \frac{\mathrm{d}_1}{\mathrm{~d}_2}$$
B
$$\mathrm{Mgd}_1 \mathrm{~d}_2$$
C
$$\operatorname{Mg}\left(d_1-d_2\right)$$
D
$$\operatorname{Mg}\left(1-\frac{\mathrm{d}_2}{\mathrm{~d}_1}\right)$$
4
MHT CET 2021 21th September Morning Shift
+1
-0

Two small drops of mercury each of radius '$$R$$' coalesce to form a large single drop. The ratio of the total surface energies before and after the change is

A
$$\sqrt{2}: 1$$
B
$$2^{2 / 3}: 1$$
C
$$2^{1 / 3}: 1$$
D
$$2: 1$$
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
EXAM MAP
Joint Entrance Examination