What is capillary ? Give some application of capillary .

What is capillarity? Give some applications of capillarity.

Give four applications of Doppler effect.

State some applications of convection.

The following observations were taken for dtermining the surface tension of water by capillary tube method: diameter of capillary , D = 1.25 xx 10^(-2) m and rise of water in capillary , h = 1.45 xx 10^(-2) m . Taking g = 9.80 m s^(-2) and using the relation T = ( r gh//2) xx 10^(3) N m^(-1) , what is the possible error in measurement of surface tension T ? (a) 2.4% (b) 15% (c) 1.6% (d) 0.15%

Water rises to height h in capillary tube. If the length of capillary tube above the surface of water is made less than h then

Explain the cause of capillary action in a capillary tube.

Which of the following graphs represents the relation between capillary rise h and bore radius of capillary tube 'r'

Explain the capillary action .

What is photoelectric cell ? Give any two applications.

A liquid rises to a height of 1.8 cm in a glass capillary A another glass capillary B having diameter 90% of capillary A is immersed in the same liquid the rise of liquid in capillary B is