Question

Let an object placed at 20 cm in front a Concave mirror of focal length 15cm draw Image formed by Concave mirror​

Answer 1

Explanation:

the answer is in the above attachment

Answer 2

Answer:

Given :

object distance=-20cm  [ sign conventions]  

Image distance=v=?  

focal length=f=-15cm  

Formula to be used:  

1/f=1/u+1/v  

1/v=1/f-1/u  

=-1/15+1/20  

= -4+3/60  

=-1/60  

v=-60 cm  

hence object is placed between F and c and image formed is beyond C .  

Nature of image:  

-->Real  AND INVERTED  

--->MAGNIFIED

--->AT A DISTANCE OF 60CM FROM THE MIRROR.  

Object height=ho=3cm  

Image height=?  

magnification=m=-v/u  =60/-20  

=-3  

m=hi/ho  

hi=mxho

=-3x3

=-9cm

Explanation:

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