To determine the focal length of convex lens by obtaining a sharp image of a distant object we generally follow the following steps which are not in proper sequence.

(a) Hold the lens between the object and the screen

(b) Measure the distance between the lens and the screen

(c) Select a well lit distant object

(d) Adjust the position of the lens to form a sharp image

c, a, d, b

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c, d, a, b

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a, c, d, b

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c, d, b, a

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Solution

The correct option is B
c, d, a, b

The correct sequence will be c, d, a, b

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The correct option is B c, d, a, b The correct sequence will be c, d, a, b

The correct option is B
c, d, a, b

The correct sequence will be c, d, a, b