Advertisements
Advertisements
प्रश्न
A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is ______.
विकल्प
0°
45°
90°
उत्तर
A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is 45°
APPEARS IN
संबंधित प्रश्न
How do we see objects around us ?
Fill in the blank.
Light travels in a ................. path.
Match the following columns
| Column A | Column B |
| a. Wooden block | i. new moon's day |
| b. Sun | ii. rectilinear propagation of light |
| c. Umbra | iii. opaque body |
| d. Eclipse | iv. luminous body |
| e. Solar eclipse | v. complete dark park |
Name any four man made sources of light.
Fill in the blank
Light consists of .............. colours.
A ______ is an artificial source of light.
a) Draw ray diagrams to show how the image is formed using a concave mirror, when the position of object is:
- at C
- between C and F
- between F and P of the mirror.
b) Mention the position and nature of image in each case.
Why are traffic signals red in colour?
State whether the following statement is True or False
An object can be seen only if it emits light.
What is light?
