Advertisements
Advertisements
प्रश्न
Tick the correct answer.
Light is a font of
पर्याय
Work
Energy
Power
None of these
Advertisements
उत्तर
Energy
APPEARS IN
संबंधित प्रश्न
Match the following
| (a). A light ray passes from air to glass | (1) . speeds up |
| (b). A light ray passes from glass to water | (2). reflects red light |
| (c). Virtual image | (3). primary colours |
| (d). Red rose | (4). plane mirror |
| (e). Red, green, and blue | (5). slows down |
Write true or false of the following statement.
We can see an object through an opaque medium.
Fill in the blank.
Light gives us the sensation of ................
Explain the difference between a transparent, a translucent, and an opaque medium. Give two examples of each.
When a ______ object comes in the way of light, light passes ______ it.
Speed of light in air is 3 × 108 m s–1 and the refractive index of a medium is 1.5. Find the speed of light in the medium.
Write about two everyday situations that tell you that light travels in a straight line.
Velocity of light is greater in denser medium than in rarer medium
What happens to light when it gets dispersed? Give an example.
Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the shirts in the image?
