English

Which type of mirror is used in the following? Head lamps of a car - Science and Technology

Advertisements
Advertisements

Question

Which type of mirror is used in the following?

Head lamps of a car

One Line Answer
Advertisements

Solution

Concave 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 4.6 | Page 127

RELATED QUESTIONS

The image of a candle flame placed at a distance of 30 cm from a mirror is formed on a screen placed in front of the mirror at a distance of 60 cm from its pole. What is the nature of the mirror? Find its focal length. If the height of the flame is 2.4 cm, find the height of its image. State whether the image formed is erect or inverted.


A ray of light is incident on a plane mirror making an angle of 90° with the mirror surface. The angle of reflection for this ray of light will be:

(a) 45°
(b) 90°
(c) 0°
(d) 60°


Find the focal length of a concave mirror whose radius of curvature is 32 cm.


 Define (i) principal focus of a concave mirror, and (ii) focal length of a concave mirror.


A communications satellite in orbit sends a parallel beam of signals down to earth. If these signals obey the same laws of reflection as light and are to be focussed onto a small receiving aerial, what should be the best shape of the metal 'dish' used to collect them? 


Copy this figure in your answer book and show the direction of the light ray after reflection:


If an object is placed at a distance of 8 cm from a concave mirror of focal length 10 cm, discuss the nature of the image formed by drawing the ray diagram.


Which type of mirror is used in a solar furnace? Support your answer with reason.


 Draw ray-diagrams to show the formation of images when the object is places in front of a concave mirror (converging mirror): 

(i) between its pole and focus
(ii) between its centre of curvature and focus


The real image formed by a concave mirror is smaller than the object if the object is:

(a) between centre of curvature and focus
(b) at a distance greater than radius of curvature
(c) at a distance equal to radius of curvature
(d) at a distance equal to focal length


In the concave reflector of a torch, the bulb is placed:

(a) between the pole and focus of reflector
(b) at the focus of reflector
(c) between focus and centre of curvature of reflector
(d) at the centre of curvature of reflector


An object is placed at a distance of 10 cm from a concave mirror of focal length 20 cm. 

State two characteristics of the image formed.


Name the mirror which can give: 

 an erect and enlarged image of an object.


What type of mirror should be used as a shaving mirror?


Draw and complete the following diagrams to show what happens to the beams of light as they enter the glass block and then leave it: 


State whether true or false. If false, correct the statement.

When an object is at the centre of curvature of concave mirror the image formed will be virtual and erect.


Which of the following can make a parallel beam of light when light from a point source is incident on it?


A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is ______.


Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?


The concave reflecting surface of a torch got rusted. What effect would this have on the beam of light from the torch?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×