Explain why
The angle of contact of mercury with glass is obtuse. While that of water with glass is acute .

Explain the nature of glass.

Fill in the blanks with acute,obtuse,right or straight:(e) when the sum of the measures two angles is that of a straight angle and if one of them is acute then the other should be_______________.

Mercury has an angle of contact equal to 140^@ with soda lime glass. A narrow tube of radius 1.00mm made of this glass is dipped in a trough containing mercury.By what amount does the mercury at the temperature of the experiment is 0.465 Nm^-1 . Density of mercury = 13.6 times 10^3 kg m^-3

A thin glass prism (n= 1.5) is immersed in water (n= 1.3) . If the angle of deviation in air for a particular ray be D , then that in water will be :

A ray of light is incident on a glass slab of thickness t at angle i , r is angle of refraction in glass plate. Distance travelled in glass plate is

Refractive index of glass is 1.5. Find the polarising angle for air-glass interface.

A convex lens made of glass has focal length 0.15 m in air. If the refractive index of glass is 3/2 and that of water is 4/3, the focal length of lens when immersed in water is

A convex lens made of glass has focal length 0.15 m in air. If refractive index of glass is 3//2 and that of water is 4//3 , the focal length of lens when immersed in water is