General Science - Questions (Section-3)
6Mesons are found in
A. Laser beamB. X-rays
C. Gamma rays D. Cosmic rays
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7The wavelength of X-rays is of the order of
A. 10 micronB. 1 angstrom
C. 1 cm D. 1 m
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8What is the wavelength of visible spectrum?
A. 8500 - 9800 angstromB. 7800 - 8000 angstrom
C. 3900 - 7600 angstrom D. 1300 - 3000 angstrom
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9Which of the following shows the masses of the three elementary particles in decreasing order?
A. Leptons, Baryons, MesonsB. Mesons, Baryons, Leptons
C. Baryons, Mesons, Leptons D. Leptons, Mesons Baryons
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10Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?
A. ThoriumB. Radium
C. Plutonium D. Radan
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