physics

Two natural sources of light

Rectilinear propagation of light means

• light bends after striking a smooth surface

• light travels in a straight line

• light travels in a curvilinear line

• both a and b

Choose the correct option

• Shadow is colorful

• Shadow gives full information

• Shadow is always black or grey

• Shadow is formed without screen

Shadow is two-dimensional

• true

• false

Light travels through air, water, glass and many other materials. What path does it travel to get from one place to another?

• sideways

• back and front

• straight

• up and down

When the Sun is behind you, your shadow is ...

• behind you

• in front of you

• at the side of you

• not there

We need _____ to see everything around us .

Objects that emit or give out are called ________ _______ .

When light hits an area and bounces back it is called:

• echo

• refraction

• reflection

• absorbing

Tags

NGSS.MS-PS4-2

which of the characteristics is not exhibited by the shadow of an object?

• erect

• can be formed on screen

• same colour as the object

• can be bigger than the object