A concave mirror has a focal length of 4 cm and an object 2 cm...

Jase Bentley

Jase Bentley

Answered

2022-12-31

A concave mirror has a focal length of 4 cm and an object 2 cm tall is placed 9 cm away from it. Find the nature and position of the image formed.

Answer & Explanation

kunstgrenwa3

kunstgrenwa3

Expert

2023-01-01Added 5 answers

Focal length = f = - 4 cm
Height of object = + 2 cm
Object distance = u = - 9 cm
Image distance = v = ?
Height of image = size = h' = ?
From thew mirror formula
1 v + 1 u = 1 f

Putting all the values
1 v 1 9 = 1 4

After solving
v=−7.2cm

As a result, the image is created 7.2 cm away from the mirror.

Now for finding magnification
We know,
m = v u

Putting all the values
( 7.2 ) 9

After solving
m=−0.8


As the magnification is negative, the image is real, inverted.




Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get your answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?