Question

A student wishes to study the cell structure under a light microscope having 10X eyepiece and 45X objective. He should illuminate the object by which one of the following colours of light so as to get the best possible resolution? [AIPMT(Prelims)-2005]
(1) Yellow
(2) Green
(3) Blue
(4) Red​

Answer 1

Among these colours the Blue colour has the shortest wavelength.
The shortest wavelength of light gives maximum resolution.
Hence, the answer is
(3) Blue

Answer 2

Answer:

Blue Light

Explanation:

• Resolution of microscope is inversely proportional to wavelength of light used.
• Blue light has minimum wavelength and hence maximum resolution.