Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

A concave mirror is moved towards a distant tree and an inverted image of the tree and an inverted image of the tree on a screen at 15 cm,then the focal

length of the mirror is......................



This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Concave mirror forms the inverted image of an object at infinity(in this case, the distant tree) at the focus. So the focal length of the mirror is 15cm. 
Or with sign, focal length is -15cm.
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts