12th Physics Important Questions Tamil Medium

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12th Physics Important Questions Tamil Medium. We covered all the 12th Physics Important Questions Tamil Medium in this post for free so that you can practice well for the exam.

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12th Physics Mock Test for Students

Two soap bubbles have radii in the ratio 2 : 1. What is the ratio of excess pressure inside them ?

(A) 1 : 2

(B) 2 : 1

(C) 1 : 4

(D) 4 : 1

Option a - 1 : 2

Pressure inside two soap bubbles are 1.01 and 1.02 atmospheres. Ratio between their volumes is :

(A) 102 : 101

(B) (102)³ : (101)³

(C) 8 : 1

(D) 2 : 1

Option c - 8 : 1

A drop of oil is placed on the surface of water. Which of the following statements is correct?

(A) It will remain on it as a sphere

(B) It will spread as a thin layer

(C) It will partly be as spherical droplets and partly as thin film

(D) It will float as a distorted drop on the water surface

Option b - It will spread as a thin layer

At critical temperature, the surface tension of a liquid :

(A) Is zero

(B) Is infinity

(C) Is same as at room temperature

(D) Cannot be determined

Option a - Is zero

A hexagonal frame of wire of perimeter L is placed on the surface of liquid of surface tension T. The force of surface tension on the frame will be :

(A) TL

(B) 2T L

(C) 6T L

(D) 12T L

Option b - 2T L

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