The splitting of white light into the seven colors when it passes through a transparent material is called

A ray of white light enters the raindrop and undergoes __________ and __________ to form a spectrum.

The refraction of light passed by the Earth’s Atmosphere having air layers of varying __________ is called atmospheric refraction.

Statement: Blue light scatters more than red light during

Red light has

The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light

The deflection of light by minute particles and molecules of the atmosphere in all direction is called ____________ of light.

At noon the sun appears white as [NCERT Exemplar Problems]

The air layer of atmosphere whose temperature is less then the hot layer behave as optically

Scattering of light by colloidal solution is known as

Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?

Atmospherics refraction explains the natural phenomena

IN CASE OF TOTAL INTERNAL REFLECTION LIGHT GOES FROM

SKY APPEARS —————- TO AN ASTRONAUT WHEN HE IS ON EARTH

REFRACTION OF LIGHT TAKES PLACE IN GLASS SLAB

An image is formed on

Light enters the eye through a thin membrane called the

Following controls and regulates the amount of light entering the eye

_________________ send signals to the brain

When the light is very bright, the diameter of pupil

To see an object comfortably and distinctly, we must hold it about _______ cm from our eyes.

The ability of the eye lens to adjust its focal length is called

Myopia and Hypermetropia can be corrected by

The image formed on the retina of the human eye is

THE BAND OF SEVEN COLOURS WHICH IS OBTAINED ON SPLITTING OF WHITE LIGHT INTO ITS SEVEN CONSTITUENT COLOURS IS KNOWN AS

IN CASE OF TOTAL INTERNAL REFLECTION LIGHT GOES FROM

IN CASE OF TOTAL INTERNAL REFLECTION, ANGLE OF REFRACTION FOR CRITICAL ANGLE IS

Which eye disease has blurred images and clouding of the lens?

The ability of eye lens to adjust its focal length to form a sharp image of the object at varying distances on the retina is called____________________

Bi-focal lens are required to correct

The persistence of vision for human eye is

The change in focal length of an eye tens is caused by the action of the

Near and far points of a young person normal eye respectively are

A person cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using a lens of power

The focal length of the eye lens increases when eye muscles

Human eye acts like a

The light sensitive cell present on retina and is sensitive to the intensity of light is:

Function of eyelids includes

The type of lens present in the human eye is.........

If a student cannot see the black board clearly even in sitting in the first bench. The type of defect of his eye is ........

Which of the following is the best example of white light?

Assertion: Planets do not twinkle

Reason: Light rays do not come from planet

The angle between angle of incidence and the angle of emergence is called...........

The colour of head lights suitable for vehicles in foggy weather

The clear sky appears blue because