The steps involved in observing a slide under a microscope are given
below. They are not in proper sequence.

I. Focus the object under high power of the microscope.
II. Place the slide on the stage of the microscope.
III. Arrange the mirror to reflect maximum light to the slide.
IV. Focus the object under low power of the microscope.

The proper sequence of steps is

• II, III, IV, I

• I, II, III, IV

• IV, III, II, I

• III, I, II, IV