Question

ASSERTION
The achromatic lenses are used in an electron microscope however, the electromagnetic lenses are used in light
REASON
Resolving power of an electron microscope is 0.2 Å.

A. Both Assertion and Reason are correct, and Reason is the correct explanation for Assertion.
B. Both Assertion and Reason are correct, but Reason is not the correct explanation for Assertion.
C. The Assertion is correct, but Reason is incorrect.
D. The Assertion is incorrect, but Reason is correct.

Answer 1

Hint: In general, the power of resolving possessed by a lens is estimated by its capacity to separate two lines or focuses on an item. The result will be the more modest base separation between two lines or focuses that can at present be recognized, if there is more noteworthy settling power. Hence, we can say that it is the most significant element of the optical framework. Besides, it can also impact the capacity to recognize the nuanced subtleties of a specific specimen.

Complete answer:
Electron and ion microscopes utilize light emission particles rather than light and use electromagnetic or electrostatic lenses to centre the particles. They can consider highlights to be little as one-10th of a nanometre, including singular molecules. Electron microscopes are utilized in biomedical exploration to examine the detailed structure of tissues, cells, organelles, and macromolecular buildings.
An achromatic lens is intended to restrict the impacts of chromatic and round variation. The achromatic lens is remedied to bring two frequencies (ordinarily red and blue) into the centre around a similar plane. Hence, they are used in light microscopes. Light microscopes are used to read living cells and for regular use when generally low amplification and resolution is sufficient.
Electron radiates are utilized in an electron magnifying instrument to light up the specimen and along these lines make a picture. Since the frequency of electrons is multiple times more limited than noticeable light, the electron magnifying instruments have more major settling power. They can accomplish a resolution of 0.2nm and amplifications up to 2,000,000 x.

Hence, the correct answer is option (D).

Note: Achromatic lenses are rectified to bring two frequencies (ordinarily red and blue) into the centre around a similar plane. Achromatic lenses are utilized in light microscopy while an electromagnetic lens is being used in electron microscopy. Electromagnetic focal point combines electron radiates by an attractive field. The attractive area in the lens, which twists electrons radiates, is created by a solenoid magnet. Resolution power alludes to the limit of an instrument to determine two focuses that are near one another. The resolution intensity of the electron magnifying device is 0.2 Å.