To determine the focal length of a convex lens by obtaining a sharp image of a distant object, the following steps were suggested which are not in proper sequence:

I. Hold the lens between the object and the screen.
II. Adjust the position of the lens to form a sharp image.
III. Select a suitable distant object.
IV. Measure the distance between the lens and the screen.

The correct sequence of steps to determine the focal length of the lens is,

• III, I, II IV

• III, I, IV, II

• III, IV, II, I

• I, II, III, IV