Q.

One can distinguish a telescope from a microscope by observing –

A. length
B. colour
C. size of the lens
D. length and size of the lens
Answer» D. length and size of the lens
Explanation: Telescope and Microscope are two scientific instruments that serve their purposes differently. One of the main differences between a telescope and a microscope is that a telescope is used to view things that are far whereas a microscope is used to view things that are very near. Another important difference between telescope and microscope is that the focal length or the distance from the focal point to the lens is different in these two scientific instruments.
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