8TH LIGHT

NAME

1. Which of the following has curved reflecting surface?

• a) plane mirrors
• b) spherical mirrors
• c) simple mirrors
• d) None of the above

2. The spherical mirror with a reflecting surface curved inward is called

• a) convex mirror
• b) concave mirror
• c) curved mirror
• d) None of the above

3. The spherical mirror used as a rear view mirror in the vehicle is

• a) concave mirror
• b) convex mirror
• c) plane mirror
• d) None of the above

4. The imaginary line passing through the centre of curvature and pole of a spherical mirror is called

• a) centre of curvature
• b) pole
• c) principal axis
• d) radius curvature

5. The distance from the pole to the focus is called

• a) pole length
• b) focal length
• c) principal axis
• d) None of the above

6. If the image and object distance is same, then the object is placed at

• a) infinity
• b) at F
• c) between f and P
• d) at C

7. If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?

• a) 10 cm
• b) 5 cm
• c) 20 cm
• d) 15 cm

1. The spherical mirror used in a beauty parlour as make-up mirror is ___________.

• 1 concave mirror
• 2 pole
• 3 virtual and errect
• 4 concave mirror

2. Geometric centre of the spherical mirror is ___________.

• 1 concave mirror
• 2 pole
• 3 virtual and errect
• 4 concave mirror