Free help with homework

Why join Brainly?

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

An object of height 5cm is placed perpendicular to the principle axis of a concave lens of focal length 10cm. if the distance of object from the optical

centre of the lens is 20cm, determine the position, nature and size of the image formed. using lens formula?


Distance Of Image From Lens = v = -20/3 cm.
Nature = Diminished, Virtual, Erect.
Size = 5/3 cm.
0 0 0
Expecting a good rating :)
how you have solve tell me step by step
Using the lens formula - 1/f = 1/v - 1/u
Then Using m = v/u
And then finally using m= h2/h1
Here h=5 f=+10 u=-20

using lens formula

1/v=1/u + 1/f
= 1/-20+ 1/10
1/v = 1/20

v= 20
so image is real and inverted.

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