Which of the following lenses would you prefer to use while reading small letters found in a dictionary ?
A. A convex lens of focal length 50 cm.
B. A concave lens of focal length 50 cm.
C. A convex lens of focal length 5 cm.
D. A concave lens of focal length 5 cm.
Answer:C
Which of the following lenses would you prefer to use while reading small letters found in a dictionary ?
A. A convex lens of focal length 50 cm. B. A concave lens of focal length 50 cm. C. A convex lens of focal length 5 cm. D. A concave lens of focal length 5 cm.