Advertisements
Advertisements
Question
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
Advertisements
Solution
Mirror formula is the relation between the focal length f of the mirror, the distance u of the object from the pole of the mirror, and the distance v of the image from the pole.
Mirror formula is
1/v +1/u = 1/f.
Size of body = 1.5 m.
Magnification of body = 1.5.
Magnification = height of image / height of object.
Height of image = magnification x height of object.
Height of image = 1.5 x 1.5= 2.25 m.
APPEARS IN
RELATED QUESTIONS
A diverging lens is used in:
(a) a magnifying glass
(b) a car to see objects on rear side
(c) spectacles for the correction of short sight
(d) a simple camera
State the types of mirrors used for (i) headlights and (ii) rear view mirror, in cars and motorcycles. Give to justify your answer in each case.
Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of suitable ray diagram.
Name the mirrors shown in Figure (a) and (b).
Discuss the position and nature of image formed by a convex mirror when an object is moved from infinity towards the pole of mirror.
What is a mirror formula?
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
In torches, search lights and headlights of vehicles the bulb is placed ______.
