Section – II
PHYSICS
Q). The size of the image formed by a convex mirror is always
A) Enlarged
B) Diminished
C) Equal to the size of the object
D) None
Q). The mirror used by a dentist is
A) Convex
B) Plane
C) Concave
D) None
Q). Diminished image is formed with a concave mirror when the object is placed
A) at focus
B) at centre of curvature
C) between pole and focus
D) beyond centre of curvature
Q). A straight line passes through the centre of curvature and pole of the convex mirror is called…………
A) Parallel axis
B) Perpendicular axis
C) Principal axis
D) None
Q). Every lens has……………….focal points.
A) 2
B) 4
C) 6
D) 8
Q). The image of an object placed at infinity before a convex lens is formed
A) at focus
B) at centre of curvature
C) at infinity
D) none of the above
Q). The power of a lens is
A) D = 
B) D = 
C) D = 
D) D = 
Q). Which of the following is correct equation?
A) n = 
B) n = 
C) n = 
D) n = 
Q). The defect of the eye caused by old age is
A) Colour blindness
B) Myopia
C) Hypermetropia
D) Presbyopia
Q). The ability of eye lens to change its focal length is called……………………….
A) focal length of a lens
B) focus of a lens
C) magnification of a lens
D) accommodation of lens