English

A driver uses a convex mirror as a rear view mirror. Explain the reason with the help of a ray diagram. - Physics

Advertisements
Advertisements

Question

A driver uses a convex mirror as a rearview mirror. Explain the reason with the help of a ray diagram.

Diagram

Solution

A convex mirror always forms a small and upright image between pole and focus. That means in a small area of mirror driver can see all the traffic coming from behind.

shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Light Energy - Short/long Answer Question [Page 101]

APPEARS IN

Selina Concise Physics [English] Class 8 ICSE
Chapter 5 Light Energy
Short/long Answer Question | Q 48 | Page 101

RELATED QUESTIONS

Draw diagram to show the action of convex mirror on a beam of parallel light rays. Mark on this diagram principal axis, focus F, centre of curvature C, pole P and focal length f, of the convex mirror.


What is the nature of a mirror having a focal length of, +10 cm? 


Where would the image be formed by a convex mirror if the object is placed: 

 between infinity and pole of the mirror? 

Draw labelled ray-diagrams to show the formation of image in both the case. 


Give two uses of a convex mirror. Explain why you would choose convex mirror for these uses. 


The radius of curvature of a convex mirror used as a rear view mirror in a moving car is 12.0 m. A truck is coming from behind it at a distance of 3.54 m. Calculate (a)

  1. position and
  2. size of the image relative to the size of the truck.
  3. What will be the nature of the image?

The focal length of a convex mirror is equal to its radius of curvature.


A .............. mirror is obtained on silvering the outer surface of a part of a hollow glass sphere.


A 5 cm tall object is placed perpendicular to the principle axis of a convex lens of focal length 12 cm. The distance of the object from the lens is 8 cm. Using the lens formula, find the position, size and nature of the image formed.


Numerical problem.

A concave mirror produces three times magnified real image of an object placed at 7 cm in front of it. Where is the image located? (Ans: 21 cm in front of the mirror)


Which type of mirror is used in the following?

Street lights


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×