Questions
The resolving power of an electron microscope can be increased by
a
Increasing accelerating potential
b
Decreasing accelerating potential
c
Using red rays instead of ultra violet rays
d
Using ultra violet rays instead of red rays
detailed solution
Correct option is A
resolving power is inversely proportional to λ and λ= 12.27V de Broglie wavelength of electronTalk to our academic expert!
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A human pupil has a radius of 0. 25 cm and a comfortable viewing distance of 25 cm, the minimum separation between two objects that human eye can resolve for a light of 500 nm wavelength is:
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