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प्रश्न
What do we call a substance through which we cannot see light? Give an example of such a substance.
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उत्तर
A substance through which we cannot see light is called an opaque medium.
Examples: Wood, metals, and black paper, etc.
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संबंधित प्रश्न
Write true or false of the following statement.
A shadow is formed because light travels in a straight-line path.
Fill in the blank.
The sun is a ............... source of light.
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 two natural sources of light.
From among the following objects, list out the opaque, translucent, and transparent bodies in the space provided below:
A glass strip, an ordinary paper, greased paper, tracing paper, polythene sheet, wooden piece, steel plate, glycerine, kerosene oil, mustard oil, grounded glass, stone, book, water, and milk.
Opaque Transparent Translucent
Fill in the blank
Speed of light in vacuum is .................
If the energy of incident beam and the scattered beam is the same, then the scattering of light is called as ______ scattering.
What is light?
A student observes a tree given in the following figure through a pin hole camera. Which of the diagrams given in the following figure (a) to (d), depicts the image seen by her correctly?
Look at the figure given in the following figure.
Will there be any difference in the shadow formed on the screen in A and B.
