1. A
   Case II
2. B
   Case I
3. C
   Case III
4. D
   Case I and Case III

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1. A
   III
2. B
   I
3. C
   II
4. D
   IV

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

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1. A
   20
2. B
   15
3. C
   12
4. D
   30

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

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1. A
   (A)
2. B
   (B)
3. C
   (C)
4. D
   (D)

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1. A
   towards the screen
2. B
   very far away from the screen
3. C
   away from the screen
4. D
   behind the screen

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1. A
   the screen in the direction of the lens or the lens away from the screen
2. B
   neither the screen nor the lens
3. C
   the screen in the direction of the lens or the lens in the direction of the screen
4. D
   the screen away from the lens or the lens in the direction of the screen

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1. A
   4 m/s
2. B
   2 m/s
3. C
   1 m/s
4. D
   8 m/s

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1. A
   lens slightly towards the sun
2. B
   lens and screen both towards the sun
3. C
   lens slightly towards the screen
4. D
   lens slightly away from the screen

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1. A
   Concave, plane and convex
2. B
   Convex, plane and concave
3. C
   Plane, convex and concave
4. D
   Convex, concave and plane

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1. A
   behind the screen
2. B
   very far away from the screen
3. C
   towards the screen
4. D
   away from the screen

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

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

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1. A
   (20 cm, 20 cm) and (inverted, inverted)
2. B
   (20 cm, 40 cm) and (erect, erect)
3. C
   (20 cm, 40 cm) and (inverted, erect)
4. D
   (20 cm, 20 cm) and (erect, inverted)

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1. A
   only on the table as per the lab arrangement
2. B
   on the wall adjacent to the window
3. C
   on the same wall as the window
4. D
   near the wall opposite to the window

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1. A
   P to Q
2. B
   Q to R
3. C
   R to S
4. D
   S to P

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1. A
   $\frac{16}{9}\times10^8$ m/s
2. B
   $\frac{9}{2}\times10^8$ m/s
3. C
   $\frac{9}{4}\times10^8$ m/s
4. D
   $\frac{3}{2}\times10^8$ m/s

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

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1. A
   size depending on the coverage area
2. B
   a full image is formed
3. C
   full image of reduced brightness is formed
4. D
   full image of increased brightness is formed

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1. A
   Clay
2. B
   Plastic
3. C
   Water
4. D
   Glass

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1. A
   convex mirror only
2. B
   concave mirrors only
3. C
   all reflecting surfaces
4. D
   plane mirror only

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1. A
   1.33
2. B
   1.34
3. C
   1.35
4. D
   1.32

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1. A
   at a distance equal to radius of curvature
2. B
   at a distance greater than radius of curvature
3. C
   at a distance equal to focal length
4. D
   between centre of curvature and focus

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1. A
   Less than 10 cm
2. B
   10 cm
3. C
   more than 20 cm
4. D
   between 10 cm and 20 cm

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