Which one of the following statement is not true for a person suffering from hypermetropia?
A. The person can see far objects distinctly
B. The focal length of the lens is large
C. The image of the close objects is focused behind the retina
D. A concave lens is used to correct this defect
Answer: Option D
Which combination of colour is the most convenient during day and night time?
A. Orange and blue
B. White and black
C. Yellow and blue
D. Red and green
Lenses with two focal lengths are used by persons suffering from . . . . . . . .
A. Myopia and hypermetropia
B. Myopia or hypermetropia
C. Myopia but not hypermetropia
D. Hypermetropia but not myopia
Which one of the following statements regarding lenses is not correct?
A. A convex lens produces both real and virtual images
B. A concave lens produces both real and virtual images
C. A convex lens can produce images equal, greater and smaller than the size of the object
D. A concave lens always produces images smaller than the size of the object
A. Both 1 and 2
B. Only 1
C. Only 2
D. Neither 1 nor 2

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