TNPSC General Science Study Materials, Notes in English - 1
Question: 1
_____ microscope is used to study bacteria, virus and structure of crystals.
(A) X-ray
(B) Simple
(C) Optical
(D) Electron
Ans: D
Electron
Question: 2
_____ is the basis for the electron microscope?
(A) Particle nature of photon
(B) Particle nature of proton
(C) Wave nature of photon
(D) Wave nature of electron
Ans: D
Wave nature of electron
Question: 3
Einstein's mass energy relation is
(A) E = mc
(B) E = m/c2
(C) E = c2/m
(D) E = mc2
Ans: D
E = mc2
Question: 4
____ is used in burglar alarm and fire alarm.
(A) Photoelectric cell
(B) Lechlanche cell
(C) Dry cell
(D) Solar cell
Ans: A
Photoelectric cell
Question: 5
Identify the particle that has no rest mass.
(A) Electron
(B) Photon
(C) Proton
(D) Positron
Ans: B
Photon
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