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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?
Name the two types of spherical mirrors. What type of mirror is represented by the:
back side of a shining steel spoon?
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
What is a spherical mirror?
Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of suitable ray diagram.
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
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.
How tall does a mirror have to be to fit an entire person’s body?
A converging lens of focal length f is placed at a distance 0.3 m from an object to produce an image on a screen 0.9 m from the lens. With the object and the screen in the same positions, an image of the object could also be produced on the screen by placing a converging lens of focal length.
