A coin dipped in water seem raised because of

1. laminar flow
2. refraction of light
3. reflection of light
4. total internal reflection

Solar cells

1. heat energy to mechanical energy
2. electrical energy to light energy
3. chemical energy to heat energy
4. solar energy to electrical energy

The point at which entire weight of the body can be supposed to be concentrated is

1. end point
2. centroid
3. centre of gravity
4. central point

Latent heat of fusion of ice is

1. 4.36 x 10⁵ Jkg^-1
2. 2.36 x 10⁵ Jkg^-1
3. 1.36 x 10⁵ Jkg^-1
4. 3.36 x 10⁵ Jkg^-1