is the image of a point object O formed by spherical mirror…

Physics Ray Optics Mix MCQ (Single Correct)

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

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

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

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

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

Text Solution

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The correct answer is:

= –

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

Similarly if O and I are on opp. sides, will be -ve which implies v and u will have same sign.

If O is on PA, I = (O) = 0 ⇒ I will also be on. P.A.

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