Science : Ch 11 – The Human Eye and the Colourful World

At noon, the Sun looks white as:

In an experiment to trace the path of a ray of light through a triangular glass prism, a student would observe that the emergent ray

Power of a lens is the measure of the degree of

Arpit remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed ,What is the total time diference on duration of day on earth?

Milk is a colloid that contains globules of fat and protein. When a beam of light is directed at a glass of milk the light is scattered. That is a great example

The effect seen Color of the sky during Sunrise and Sunset

The density of the atmosphere, as we know goes on decreasing as the distance above the sea level increases,this phenomeneon is called

The defect in a person can see nearby objects but not far away objects

Lenses which have both concave and convex structure.

When a person can see faraway objects but not nearby objects.

Myopia can be corrected by using

A concave lens of short focal length has greater

The colour of the clear sky blue due to

The sky appears black to an astronaut as there is no

Visible spectrum is the band of coloured components of a