Advertisements
Advertisements
प्रश्न
Amount of light entering into the eye is controlled by ______.
रिक्त स्थान भरें
Advertisements
उत्तर
Amount of light entering into the eye is controlled by Iris.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
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 |
Explain the difference between a transparent, a translucent, and an opaque medium. Give two examples of each.
Tick the correct answer.
The natural source of light is
Fill in the blank
Speed of light in vacuum is .................
Write true or false
Opaque objects do not allow light to pass through them.
A ______ is an artificial source of light.
Write whether of the following objects are luminous or non-luminous.
| Object | Luminous/Non-luminous |
| A book | |
| A burning candle | |
| A wax cloth | |
| A pencil | |
| A pen | |
| A light bulb | |
| A tyre | |
| A torch |
Match the following.
| Group A | Group B |
| (a) Mirror | (1) Non-luminous |
| (b) Firefly | (2) Inverted image |
| (c) Pinhole camera | (3) Reflection |
| (d) Moon | (4) Luminous |
State Rayleigh’s law of scattering.
Boojho made light from a laser torch fall on a prism. Will he be able to observe a band of seven colours? Explain with a reason.
