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प्रश्न
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उत्तर
Magnification = height of image / height of object.
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संबंधित प्रश्न
A student obtains a sharp image of the distant window (W) of the school laboratory on the screen (S) using the given concave mirror (M) to determine its focal length. Which of the following distances should he measure to get the focal length of the mirror?
A 4 cm tall object is placed on the principal axis of a convex lens. The distance of the object from the optical centre of the lens is 12 cm and its sharp image is formed at a distance of 24 cm from it on a screen on the other side of the lens. If the object is now moved a little away from the lens, in which way (towards the lens or away from the lens) will he have to move the screen to get a sharp image of the object on it again? How will the magnification of the image be affected?
Explain the following term related to spherical lenses:- centres of curvature
An image formed by a ______ mirror is always of the same size as that of the object.
A coin placed at the bottom of a vessel appears to be raised when water is poured in the vessel.
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
What is a spherical mirror?
State the position of object for which the image formed by a concave mirror is of same size.
Does the mirror mentioned in part (b) form real image for all locations of the object?
