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प्रश्न
Amount of light entering into the eye is controlled by ______.
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उत्तर
Amount of light entering into the eye is controlled by Iris.
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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.
Explain the difference between a transparent, a translucent, and an opaque medium. Give two examples of each.
Answer the following.
Write down five man-made sources of light.
Match the following.
| Group A | Group B |
| (a) Mirror | (1) Non-luminous |
| (b) Firefly | (2) Inverted image |
| (c) Pinhole camera | (3) Reflection |
| (d) Moon | (4) Luminous |
Choose the translucent substance from the following
Match the following.
| 1. | Ratio of height of image to height of object. | Concave mirror |
| 2. | Used in hairpin bends in mountains. | Total internal reflection |
| 3. | Coin inside water appearing slightly raised. | Magnification |
| 4. | Mirage | Convex mirror |
| 5. | Used as Dentist’s mirror. | Refraction |
If the energy of incident beam and the scattered beam is the same, then the scattering of light is called as ______ scattering.
State whether the following statement is True or False.
An object can be seen only if it emits light
Boojho made light from a laser torch fall on a prism. Will he be able to observe a band of seven colours? Explain with a reason.
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.
