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Find the nature position of the …

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Find the nature position of the image object size 1cm and its distance is 15cm and focal length

Posted by Bakkar Ali 4 years, 5 months ago

CBSE > Class 10 > Science

1 answers

Preeti Dabral 4 years, 5 months ago

The given mirror is a concave mirror thus sign convention it's focal length will be negative.

This here
f = -10 cm
u = -15cm
h(height of object) = 1cm

we have to find
size , nature , position of image formed .

Thus using mirror equation :-
1/f = 1/u+1/v
=>1/v = 1/f-1/u
=> 1/v = -1/10+1/15
=> 1/v = -1/30
=> v = -30 { thus image will be formed beyond center
Now magnification
m = -(v/u) = h'/h
m = -(-30/-15)
=> m = -2
HENCE the image formed will be real and inverted and magnified.

Now m = h'/h
2 = h'/1
=> h' = 2cm
hence the size of the image will be doubled

0Thank You

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CBSE > Class 10 > Science