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संबंधित प्रश्न
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?
An image formed by a ______ mirror is always of the same size as that of the object.
A virtual image larger than the object can be produced by a ______.
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?
What do you mean by the term dispersion?
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
Why does a driver use a convex mirror instead of a plane mirror as a rear view mirror?
Illustrate your answer with the help of a ray diagram.
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
Complete the following diagrams shown in the following figures by drawing the reflected rays.
