Question

★ Light - Reflection & Refraction ★

1: Multiple choice questions :-

i)The image formed by a concave mirror is observed to be virtual , erect and larger than the object . Where should be the position of the object ?

$• \text{Between the principal focus and the centre of curvature}$
$• \text{At the centre of curvature}$
$• \text{Beyond the centre of curvature}$
$• \text{Between the pole of the mirror and its principal focus}$

ii) Where should an object best placed in front of a convex lens to get a real image of the same size of the object ?

$• \text{At the principal focus of the lens}$
$• \text{At twice the focal length}$
$• \text{ At infinity }$
$• \text{Between the optical centre of the lens and its principal focus}$

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Answer 1

Answer:

Ray Optics

Explanation:

Q.1 Option D

Between the pole and principal Focus it produces Virtual , erect and larger image behind the mirror .

Q.2 Option B

at twice The focal length means at center of Curvature .

It produces same The image as size of object .

Answer 2

Answer:

1) option D ( b/w pole and focus)