Advertisements
Advertisements
प्रश्न
Can light travel in vacuum ?
उत्तर
Yes, light can travels in vacuum or air, a distance of nearly 299, 792, 458 metre (or nearly 3 x 108 metre) in one second. Thus, the speed of light in vacuum (or air) is 3 x 108 m s’1 nearly.
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
The moon is a natural source of light.
How does light make an object visible?
Does the flame of a gas stove emit light?
Tick the correct answer.
Light is a font of
Fill in the blank
There are ........... and man-made ............ of light.
Answer the following.
Differentiate between luminous and non-Luminous objects.
When light passes through a prism, it gets separated into ______ colours.
Describe the pictures.
The mirror used in search light is ______.
Amount of light entering into the eye is controlled by ______.
