Why are concave mirrors used in torches?
Asked by akshitajain | 17th Mar, 2009, 06:29: PM
Expert Answer:
A concave mirror is used so that a parallel beam of light can be obtained , as this travels a greater distance.
The bulb is placed at the focus of the mirror.
Answered by | 19th Mar, 2009, 04:51: PM
Related Videos
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change