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प्रश्न
Explain the following term related to spherical lenses:- aperture
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उत्तर
Aperture:-
The diameter of sphere of part of which a lens is formed is called the aperture.
संबंधित प्रश्न
A concave mirror always forms a real image.
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
Write the formula for a lens connecting image distance (v), object distance (u) and the focal length (f). How does the lens formula differ from the mirror formula?
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
Explain the following term:
Incident ray
Draw diagram/diagrams to show them.
Define the following term in relation to concave mirror.
Principal axis
In torches, search lights and headlights of vehicles the bulb is placed ______.
The minimum length of the mirror required to see the full image of the person is half ‘ of his height.
