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प्रश्न
Answer the following.
Name some sources of light that are not hot.
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उत्तर
Moon, jugnu.
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संबंधित प्रश्न
Explain the difference between a transparent, a translucent, and an opaque medium. Give two examples of each.
Fill in the blank
There are ........... and man-made ............ of light.
Fill in the blank
A ............. is formed when the path of light is obstructed by an ..............
A ______ is a natural source of light.
_______ is the natural source that stimulates sight and makes things visible.
Choose the translucent substance from the following
A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is ______.
State whether true or false. If false, correct the statement.
If a ray of light passes obliquely from one medium to another, it does not suffer any deviation.
The mirror used in search light is ______.
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?
