English

Which type of mirror is used in the following? Street lights

Advertisements
Advertisements

Question

Which type of mirror is used in the following?

Street lights

One Line Answer
Advertisements

Solution

Convex mirror

shaalaa.com
  Is there an error in this question or solution?
Chapter 11: Reflection of Light - Exercise [Page 127]

APPEARS IN

Balbharati Science and Technology [English] 9 Standard Maharashtra State Board
Chapter 11 Reflection of Light
Exercise | Q 4.5 | Page 127

RELATED QUESTIONS

Why do we prefer a convex mirror as a rear-view mirror in vehicles?


An object is placed at a distance of 40 cm in front of a convex mirror of radius of curvature 40 cm. List four characteristics of the image formed by the mirror.


 What is meant by (i) principal focus of a convex mirror, and (ii) focal length of a convex mirror? 


If the focal length of a spherical mirror is 12.5 cm, its radius of curvature will be:

(a) 25 cm
(b) 15 cm
(c) 20 cm
(d) 35 cm


A boy is standing in front of and close to a special mirror. He finds the image of his head bigger than normal, the middle part of his body of the same size, and his legs smaller than normal. The special mirror is made up of three types of mirrors in the following order from top downwards:

(a) Convex, Plane, Concave
(b) Plane, Convex, Concave
(c) Concave, Plane, Convex
(d) Convex, Concave, Plane


Two big mirrors A and B are fitted side by side on a wall. A man is standing at such a distance from the wall that he can see the erect image of his face in both the mirrors. When the man starts walking towards the mirrors, he find that the size of his face in mirror A goes on increasing but that in mirror B remains the same.

(a) mirror A is concave and mirror B is convex
(b) mirror A is plane and mirror B is concave
(c) mirror A is concave and mirror B is plane
(d) mirror A is convex and mirror B is concave


An object 1 cm tall is placed 30 cm in front of a convex mirror of focal length 20 cm. Find the size and position of the image formed by the convex mirror. 


Name two factors on which the focal length of a lens depends. 


An object is placed at the following distance from a convex lens of focal length 15 cm:

(a) 35 cm
(b) 30 cm
(c) 20 cm
(d) 10 cm
Which position of the object will produce:
(i) a magnified real image?
(ii) a magnified virtual image?
(iii) a diminished real image?
(iv) an image of same size as the object?


At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.


 Write true or false 

 At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.


A convex mirror is used


Redraw the following diagram on your answer-sheet and show the path of the reflected ray. Also mark the angle of incidence (∠i) and the angle of reflection (∠r) on the diagram. 

 


The most common example of a convex mirror is the make – up mirror.


The field of view is maximum for ______.


If the object is at infinity in front of a convex mirror the image is formed at infinity.


What do you observe when an object is placed anywhere between P and infinity in front of a convex mirror?


Higher-Order Thinking Skills:

A convex mirror is in water. What should be the change in its focal length?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×