Question

only for science expert give answer I to III

Answer 1

1. The bending of light ray when passing from two optically different mediums is called b) Refraction.

2. The image of an object placed at the focus of a convex lens is formed at d) Infinity

3. The walking of stars at night is caused by b) Refraction of light.

1. A convex lens acts as Converging lens and a concave lens as a diverging lens.

2. The solar spectrum consists of seven colours of light.

3. A ray of light parallel to the principal of axis passes through convex lens after the refraction of light.

1. The perpendicular line passing through the point of incidence is called normal.- True

2. The ability of a transparent medium to bend the light entering into it is called it's refractive index.- False

Answer 2

1-refraction

2-infinity

3-refraction of pight