If the power of a lens is - 4.0 D, then it means that the lens is a *
1 point
A. concave lens of focal length -50 m
B. convex lens of focal length +50 cm
C. concave lens of focal length -25 cm
D. convex lens of focal length -25 m
10. R
Answers
Answered by
10
Answer:
power of lens = 1/f this is negative for diverging lens.
Explanation:
power of lens p= 1/f D
focal length = 1/p = 1/ -4 =- 0.25 m= -25cm
focal length is negative for diverging lens like concave lens
ans is concave lens of focal length -25cm
Answered by
1
From the given question the correct answer is :
C. concave lens of focal length -25 cm
Solution:
power of lens = 1/f this is negative for diverging lens.
power of lens p= 1/f D
focal length = 1/p = 1/ -4 =- 0.25 m= -25cm
focal length is negative for diverging lens like concave lens
Answer is concave lens of focal length -25cm
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