Tools Techniques - Questions & Answers | Exam2Win

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66. Resolving limit of our eye is

A. 1 “

B. 1 ‘

C. 1/60 ‘

D. 1/60 “

Explanation:

67. Which German physicist invented the electron microscope which won him the 1986 Nobel Prize in Physics

A. Erst Ruska

B. Van’t Hoff

C. J.H.D. Jensen

D. Eugene P. Wegner

Explanation:

68. High magnification of electron microscope is due to

A. Electron beam

B. Electromagnets

C. High voltage

D. Vacuum

Explanation:

69. Depth of an object can be studied through

A. Compound microscope

B. Phase-contrast microscope

C. Dark field microscope

D. Scanning electron microscope

Explanation:

70. 1 nm is equal to

A. 10 Å

B. 10⁻³ mm

C. 10⁻⁸ m

D. 100 μm

Explanation: