1. A
   2 cm
2. B
   10 cm
3. C
   4 cm
4. D
   22 cm

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1. A
   At the centre of curvature
2. B
   Very near to the focus
3. C
   Between the pole and the focus
4. D
   Between the focus and the centre of curvature

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1. A
   0.50
2. B
   0.75
3. C
   0.25
4. D
   1.75

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1. A
   The difference in refracting surface
2. B
   The difference in the wavelength
3. C
   The difference in colour of light
4. D
   The difference in the nature of light

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1. A
   $e=\frac{i}{2}$
2. B
   $e=2i$
3. C
   $e=i$
4. D
   $e>i$

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1. A
   $r=1^\circ$
2. B
   $r=45^\circ$
3. C
   $r=\sin^{-1}\left(\frac{1}{n}\right)$
4. D
   $r=90^\circ$

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1. A
   4
2. B
   5
3. C
   3
4. D
   2

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1. A
   $\frac{1}{v}=\frac{1}{u}+\frac{1}{f}$
2. B
   $\frac{1}{v}-\frac{1}{u}=\frac{1}{f}$
3. C
   $\frac{1}{v}+\frac{1}{u}=\frac{1}{f}$
4. D
   $\frac{1}{u}=\frac{1}{v}+\frac{1}{f}$

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1. A
   at infinity
2. B
   at the centre of curvature
3. C
   between pole and focus
4. D
   between focus and centre of curvature

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1. A
   1.6522
2. B
   1.6244
3. C
   1.3241
4. D
   1.2401

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1. A
   Decreased after each reflection
2. B
   Always Zero
3. C
   Always constant
4. D
   Increased after each reflection

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1. A
   $P_1\times P_2$
2. B
   $P_1-P_2$
3. C
   $\frac{P_1}{P_2}$
4. D
   $P_1+P_2$

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1. A
   less than 100 mm
2. B
   more than 200 mm
3. C
   between 100 mm and 200 mm
4. D
   exactly 200 mm

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1. A
   3.75
2. B
   2.4
3. C
   0.4
4. D
   4.2

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1. A
   $0^\circ$
2. B
   $\left(\frac{a}{2}\right)^\circ$
3. C
   $90^\circ$
4. D
   $a^\circ$

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1. A
   The brightness of the image will reduce.
2. B
   The lower half of the inverted image will not be formed.
3. C
   The upper half of the object will not be formed.
4. D
   The size of the image formed will be one-half of the size of the image due to complete lens.

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1. A
   is refracted away from the normal
2. B
   is reflected along the same path
3. C
   does not get refracted
4. D
   is refracted towards the normal

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1. A
   $e<i$
2. B
   $e>i$
3. C
   does not depend on the refractive index of the medium
4. D
   depends on the refractive index of the medium

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1. A
   $i=r=90^\circ$
2. B
   $i=0^\circ=r=90^\circ$
3. C
   $i\ne r=0^\circ$
4. D
   $i=r=0^\circ$

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1. A
   sulphurics acid
2. B
   water
3. C
   glass
4. D
   carbon disulphide

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1. A
   Red cloth reflects all colours
2. B
   Black cloth reflects all colours
3. C
   Black cloth reflects only black light
4. D
   Black absorbs all the colours

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1. A
   A is denser than B
2. B
   We cannot identify the denser medium
3. C
   Both are equally dense
4. D
   B is denser than A

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1. A
   Virtual and erect
2. B
   Real and Virtual
3. C
   Real and Inverted
4. D
   Real and erect

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1. A
   They give a virtual image
2. B
   Convex in nature
3. C
   Concave in nature
4. D
   They have wider field of coverage

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1. A
   retrace its path
2. B
   will emerge parallel to the principal axis
3. C
   will emerge through a focus on another side
4. D
   will emerge perpendicular to the principal axis

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