Question

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

• A. II, III, IV, I
• B. I, II, III, IV
• C. IV, III, II, I
• D. III, I, II, IV

Answer 1

The correct option is A

II, III, IV, I

The correct option is A.

Explanation of the correct option:

1. A microscope is an instrument used to observe microscopic organisms.
2. The slide is first prepared and then placed on the microscope stage.
3. The mirror reflects the light onto the stage through the condenser.
4. The lens through which an individual sees the slide is called the eyepiece.
5. There are objectives of different magnification power such as 10x, 40x and 100x.
6. First, the slide is observed in low power and then under high power.

Explanation of the incorrect options:

Option B:

The slide is first observed at the low power of the microscope and then viewed at high power.

Option C:

An object cannot be viewed in the dark, the first mirror is adjusted to reflect the light onto the slide, and low power adjustments are made.

Option D:

1. The light is adjusted after the slide has been placed on the stage.
2. This is then followed by observing the slide under the high and low power of the microscope.

The correct sequence of the steps involved in observing a slide under a microscope is: II, III, IV, I