Advertisements
Advertisements
Question
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
Advertisements
Solution
(i) Rear view mirrors: Convex mirrors
Reason: (a) Image is formed virtual and erect always.
(b) Image formed is always diminished in size, so it covers large view area.
(ii) Shaving mirrors: Concave mirrors
Reason: (a) Image formed is larger in size so as to see clearly details of the object.
(b) Image formed is virtual and erect when object is placed close to the mirror.
APPEARS IN
RELATED QUESTIONS
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
Define the terms pole, principal axis and centre of curvature with reference to 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.
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray:
The focal length of a concave mirror is 10 cm. Find its radius of curvature.
An object of length 4 cm is placed in front of a concave mirror at distance 30 cm. The focal length of mirror is 15 cm.
- Where will the image form?
- What will be the length of image?
The following figure shows a concave mirror with its pole (P), focus (F), and center of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave mirror.
