Q: A lens has a power of +2·0 Dioptre. Which one of the following statements about the lens is true?
(a)The lens is concave and has a focal length of 0·5 metre
(b)The lens is convex and has a focal length of 2·0 metre
(c)The lens is convex and has a focal length of 0·5 metre
(d)The lens is concave and has a focal length of 2·0 metre
Correct Answer: (d)
The correct answer is (c): The lens is convex and has a focal length of 0·5 metre. Subject: Science & Technology | Sub-topic: Physics Note: This answer was determined through AI-based research. Verify against the official answer key when available.