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Tuesday, 15 March 2016

Physics MCQs

physics solved mcqs, physics mcqs with answer, physics mcqs for nts test preparation
171. In Wilson cloud chamber radiations become visible reflection light from?
A. Ions
B. Nuclear radiations
C. Droplets of fog
D. Glass window

172. The track formed in the Wilson cloud chamber due to alpha particles is?
A. Thin and broken line
B. Thick continuous line
C. Thick line track in random direction
            D. None of above

173. The track formed the Wilson cloud chamber due to beta particles is?
A. Thin and broken line
B. Thick continuous line
C. Whole region exposed to radiations
D. None of above

174. The spontaneous emissions of radiations from heavy nucleus ( A > 83 ) is called?
A. Nuclear fission
B. Nuclear Fusion
C. Radioactivity
D. None of above

175. Alpha particles are?
A. Protons
B. Positrons
C. Negatively charged
D. Helium nuclei

176. When a nucleus emit an Alpha particles its charge number decreases by?
A. 3
B. 2
C. 6
D. 5

177. Beta particles are?
A. Protons
B. Electrons
C. Positrons
D. Neutrons

178. Beta  particles, carries a charge?
A. 2e
B. +2e
C. -e
None of above

179. When a nucleus emits an alpha particle its atomic mass decreases by?
A. 2
B. 1
C. 4
D. 3

180. Gamma rays carries a charge?
A. -e
B. +e
C. No charge
D. None of above

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