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प्रश्न
Observe the picture given in Fig. 11.1 carefully.
A patch of light is obtained at B, when the torch is lighted as shown. Which of the following is kept at position A to get this patch of light?
पर्याय
A wooden board
A glass sheet
A mirror
A sheet of white paper,
उत्तर
A mirror
Explanation:
Only a mirror can reflect a patch of light and change its direction.
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संबंधित प्रश्न
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 |
What is light? Define it.
Name two natural sources of light.
Can a transparent medium form an image? Explain your answer.
Tick the correct answer.
Substance which don’t allow light to pass through them,
Write true or false
The moon has its own light.
Answer the following.
Differentiate between luminous and non-Luminous objects.
Light travels only in a______ It is because of this property that______ are formed.
Sunlight is a blend of______ colors
A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is ______.
