Last Updated On [03-11-2023]
Which of the following statements is true?
(a)
A convex lens with power +4 D has a focal length – 0.25 m.
(b)
A convex lens with power –4 D has a focal length +0.25 m.
(c)
A concave lens with power +4 D has a focal length – 0.25 m.
(d)
A concave lens with power –4 D has a focal length – 0.25 m.
Which of the following statements is true?
(a)
A convex lens with power +4 D has a focal length – 0.25 m.
(b)
A convex lens with power –4 D has a focal length +0.25 m.
(c)
A concave lens with power +4 D has a focal length – 0.25 m.
(d)
A concave lens with power –4 D has a focal length – 0.25 m.
Question ID - 153220 :-
Which of the following statements is true?
(a)
A convex lens with power +4 D has a focal length – 0.25 m.
(b)
A convex lens with power –4 D has a focal length +0.25 m.
(c)
A concave lens with power +4 D has a focal length – 0.25 m.
(d)
A concave lens with power –4 D has a focal length – 0.25 m.
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Which of the following statements is true? |
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(a) |
A convex lens with power +4 D has a focal length – 0.25 m. |
(b) |
A convex lens with power –4 D has a focal length +0.25 m. |
|
(c) |
A concave lens with power +4 D has a focal length – 0.25 m. |
(d) |
A concave lens with power –4 D has a focal length – 0.25 m. |
Next Question :
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The graph in figure shows how the inverse of magnification (1/m) produced by a thin convex lens varies with object distance ‘u’, the power of lens will be
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(a) |
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(b) |
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(c) |
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(d) |
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