Surface Tension in Hindi. We covered all the Surface Tension in Hindi in this post for free so that you can practice well for the exam.
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Surface Tension Quiz for Students
A square frame of side I is dipped in liquid soap. When it is taken out of the liquid a film is formed on it. If the surface tension is T then the force acting on it is :
(A) 2 Tl
(B) 4 TI
(C) 8 TI
(D) 16 TI
Option c - 8 Tl
A rectangular frame of thin wire of length 4 cm and breadth 3 cm just rests on the surface of the water of surface tension 72 dyne/cm. The force due to surface tension acting on the frame is
(A) 2016 dyne
(B) 1008 dyne
(C) 201.6 dyne
(D) 100.8 dyne
Option a - 2016 dyne
A soap film is formed on a rectangular frame of a length of 7 cm and breadth of 3 cm dipping in a soap solution. The framework hangs from a balance and an extra weight of 0.4 g is placed in the opposite pan to balance the pull of the film. The surface tension of the soap solution is (g= 1000 cm/s²) :
(A) 10 dyne/cm
(B) 5 dyne/cm
(C) 15 dyne/cm
(D) 20 dyne/cm
Option a - 10 dyne/cm
Insects can move on the surface of the water without sinking due to :
(A) Hydrostatic upthrust
(B) Dynamic lift
(C) Viscosity of water
(D) The surface tension of water
Option d - The surface tension of water
Surface tension is the force per unit length on an imaginary line at the surface of liquid directed :
(A) Normal to the line and normal to the surface
(B) Normal to the line but along the surface
(C) Parallel to the line and along the surface
(D) Parallel to the line but normal to the surface
Option b - Normal to the line but along the surface
The surface tension of boiling water is :
(A) 72 dyne/cm
(B) 0.072 N/m
(C) Infinite
(D) Zero
Option d - Zero
The light thread is loosely bound along the diameter of the metal ring. If the metal ring is dipped in soap solution and taken out. The thread rests in a zigzag way. If the film on the right side is pricked with a pin. Then the thread :
(A) Is pulled to right and takes a curve shape
(B) Is pulled to left and takes a curve shape
(C) Will still remain zigzag
(D) Will also break down
Option b - Is pulled to left and takes a curve shape
We covered all the surface tension in Hindi above in this post for free so that you can practice well for the exam.
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