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CBSE Previous Years' Questions
1. What is the focal length of a plane mirror? (Year: 2001)
2. Prove that, for a concave mirror, the radius of curvature is twice the focal length? (1996)
3. Prove the mirror formula for reflection of light from a concave mirror. (1992)
4. Draw a ray diagram to show the formation of image of an object placed between the pole and centre of curvature of a concave mirror. (1995) s
5. Establish the relationship between object distance, image distance and radius of curvature for a concave mirror. (1995, 97) 3
6. Use the mirror formula to show that for an object lying between the pole and focus of a concave mirror, the image formed is always virtual in nature. (1997) 2
7. Will the reflected rays converge at a point when a parallel beam of light is incident on a concave mirror of large aperture? · (1994) 1
8. An object is kept in front of a concave mirror of focal length 20 cm. The image formed is three times the size of object. Calculate two possible distances of the object from the mirror. (1994) 3
9. An object 0.05 m high is placed at a distance of 0.5 m from a concave mirror of radius of curvature 0.2 m. Find the position, nature and the size of the image formed. (1994) 3
10. An object is kept in front of a concave mirror of focal length 15 cm. The image formed is three times the size of the object. Calculate the two possible distances of the object from the mirror. (1998) 3
11. Find the position of an object which when placed in front of a concave mirror of focal length 20 cm, produces a virtual image, which is twice the size of the object. (1999) 3
12. A concave mirror is placed in water. Will there be any change in the focal length? Give reason. (2000) 1
13. Establish the relationship between object distance, image distance and radius of curvature for a convex mirror. _ . (1997) 3
14. Derive the relation between distance of object, distance of image and radius of curvature of a convex spherical
1. What is the focal length of a plane mirror? (Year: 2001)
2. Prove that, for a concave mirror, the radius of curvature is twice the focal length? (1996)
3. Prove the mirror formula for reflection of light from a concave mirror. (1992)
4. Draw a ray diagram to show the formation of image of an object placed between the pole and centre of curvature of a concave mirror. (1995) s
5. Establish the relationship between object distance, image distance and radius of curvature for a concave mirror. (1995, 97) 3
6. Use the mirror formula to show that for an object lying between the pole and focus of a concave mirror, the image formed is always virtual in nature. (1997) 2
7. Will the reflected rays converge at a point when a parallel beam of light is incident on a concave mirror of large aperture? · (1994) 1
8. An object is kept in front of a concave mirror of focal length 20 cm. The image formed is three times the size of object. Calculate two possible distances of the object from the mirror. (1994) 3
9. An object 0.05 m high is placed at a distance of 0.5 m from a concave mirror of radius of curvature 0.2 m. Find the position, nature and the size of the image formed. (1994) 3
10. An object is kept in front of a concave mirror of focal length 15 cm. The image formed is three times the size of the object. Calculate the two possible distances of the object from the mirror. (1998) 3
11. Find the position of an object which when placed in front of a concave mirror of focal length 20 cm, produces a virtual image, which is twice the size of the object. (1999) 3
12. A concave mirror is placed in water. Will there be any change in the focal length? Give reason. (2000) 1
13. Establish the relationship between object distance, image distance and radius of curvature for a convex mirror. _ . (1997) 3
14. Derive the relation between distance of object, distance of image and radius of curvature of a convex spherical