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प्रश्न
List in proper sequence the steps of the experiment for determining the approximate focal length of a given concave mirror by obtaining the image of a distant object.
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उत्तर
(i) Fix the concave mirror on the stand and place it on table facing towards a distant object.
(ii) Arrange the screen on the table so that the image of the distant object is obtained on it.
(iii) Measure the distance between the mirror and the screen using a metre scale. This distance is the focal length (F) of the mirror.
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संबंधित प्रश्न
What is refraction of light?
Water is optically denser than glass.
A real image is formed by the light rays after reflection or refraction when they:
- actually meet or intersect with each other.
- actually converge at a point.
- appear to meet when they are produced in the backward direction.
- appear to diverge from a point.
Which of the above statements are correct?
Lights of different colours are used as signal for safety transport. From these, the wavelength of red light is _______ nm.
The incident rays and refracting rays are on opposite sides of the normal.
The speed of light varies in different media.
Numerical problems.
The speed of light in water is 2.25 × 108 ms–1. If the speed of light in vacuum is 3 × 108 ms–1, calculate the refractive index of water.
The deviation of light ray from its path when it travels from one transparent medium to another transparent medium is called ______.
How does the light travel?
A ray of light traveling in medium 1 strikes and travels into another transparent medium 2. If the speed of light is greater in medium 1, the ray will ______.
