light

Luminous means

• Objects that are in space

• Objects that give their own light

• Objects that are shiny

• Objects that are very huge

Rectilinear propagation of light means

• Travelling very fast

• Bending when changing the medium

• Travelling in a curvilinear line

• Travelling in a straight line

Objects that allow all light to pass through them

• Translucent

• Transparent

• Opaque

• All of these

Which of these is NOT correct about light?

• Light travels in a straight line.

• The speed of light is the fastest in the entire universe.

• Light bends while changing the medium through which it is passing

• Light can pass through all objects

Rectilinear property of light means

• Light bends while changing the medium

• Light travels faster than any other thing

• Light travels in a straight line

The ability to produce light through chemical reaction is called

• Bioluminescence

• Exuperantia

• Light producing

• None of these

The size of shadow is fixed

• True

• False

The color of a shadow is

• Black

• White

• Gray

• Same as that of the object

Light is a form of energy that causes the sensation of

• hearing

• smell

• sight

• touch

The dark part of the shadow is called

• Umbra

• Penumbra

• Dumbra

• None of these