Light and Its Properties

The video introduces light as a form of energy essential for vision, with the Sun as the primary source. It distinguishes between luminous objects, like bulbs and candles, which emit light, and non-luminous objects, like tables and cloths, which do not. Non-luminous objects are further categorized into transparent objects, which allow light to pass through, and opaque objects, which do not.

What is the primary source of light on Earth?

• Fire

• The Sun

• The Moon

• Stars

Which of the following is a luminous object?

• Bag

• Lamp

• Cloth

• Table

What are objects called that do not emit their own light?

• Luminous objects

• Non-luminous objects

• Transparent objects

• Reflective objects

Which of the following is an example of a transparent object?

• Wood

• Metal

• Stone

• Glass

What type of objects do not allow light to pass through them?

• Non-luminous objects

• Opaque objects

• Luminous objects

• Transparent objects