Explain the difference between a transparent, a translucent and an opaque medium. Give two examples of each.
Write true or false for statement
A shadow is formed because light travels in a straight line path.
Tick the correct answer
A tubelight is a
What is a transparent medium ? Give two examples.
Light is a fonn of
Select the correct alternative
The luminous body is
What is meant by luminous intensity ? What is one lumen ?
Fill in the blank
A ............. is formed when the path of light is obstructed by an ..............