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  • I is the image of a point object O formed by spherical mirror, then which of the following statement is incorrect:Option: 1 If O and I are on sa

I is the image of a point object O formed by spherical mirror, then which of the following statement is incorrect:

Option: 1

If O and I are on same side of the principal axis, then they have to be on opposite sides of the mirror.


Option: 2

If O and I are on opposite side of the principal axis, then they have to be on same side of the mirror.


Option: 3

If O and I are on opposite side of the principal axis, then they can be on opposite side of the mirror as  well.


Option: 4

If O is on principal axis then I has to lie on principal axis only.


Answers (1)

best_answer

 

Magnification from mirror -

m= \frac{h_{i}}{h_{o}}= \frac{-v}{u}
 

- wherein

h_{i}= height of image from principal axis

h_{o}= height of object from principal axis

u= object distance

v= image distance

 

 

\frac{I}{O}=-\frac{V}{u}

If O and I are on same sides of PA.  \frac{I}{O}  will be positive which implies v and u will be of opposite signs.

Similarly if O and I are on opposite sides, \frac{I}{O} will be -ve which implies v and u will have same sign.

If O is on PA, I=\left [ -\frac{V}{u} \right ]\left ( O \right )\Rightarrow I will also be on. P.A.

Posted by

shivangi.bhatnagar

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