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प्रश्न
How do we see objects around us ?
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उत्तर
Objects are seen when light after striking them, returns in the same medium and reach our eyes.
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संबंधित प्रश्न
Fill in the blank.
A medium which allows light to pass through it easily is called the ...................
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 |
Tick the correct answer.
Substance which don’t allow light to pass through them,
Fill in the blank
Light consists of .............. colours.
Answer the following.
Write down five man-made sources of light.
When light passes through a prism, it gets separated into ______ colours.
_______ is the natural source that stimulates sight and makes things visible.
Mirrors change the direction of light that fall on them.
Why are traffic signals red in colour?
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?
