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1
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The excess of pressure, due to surface tension, on a spherical liquid drop of radius ' $R$ ' is proportional to

A
$R^{-1}$
B
$R$
C
$R^{-2}$
D
$R^2$
2
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+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
$2^{2 / 3}: 1$
B
$\sqrt{2}: 1$
C
$2^{1 / 3}: 1$
D
$2: 1$
3
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In air, a charged soap bubble of radius ' $R$ ' breaks into 27 small soap bubbles of equal radius ' $r$ '. Then the ratio of mechanical force acting per unit area of big soap bubble to that of a small soap bubble is

A
$\frac{1}{81}$
B
$\frac{3}{1}$
C
$\frac{1}{3}$
D
$\frac{9}{1}$
4
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two capillary tubes of different diameters are dipped in water. The rise of water is

A
zero in both the tubes.
B
same in both the tubes.
C
more in the tube of larger diameter.
D
more in the tube of smaller diameter.
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