SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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10-12m
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10-15m
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10-18m
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10-21m
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Detailed explanation-1: -The size of a proton is of the order of 1015 m and the size of the visible universe is of the order of 1026 m. From this information, you can conclude that: A. The size of the universe is 41 orders of magnitude greater than that of the proton.
Detailed explanation-2: -Inside a nucleus are neutrons and protons, which occupy a space about 100, 000 times smaller than the whole atom. In the pond example, a proton would measure about 1/50th inch (0.5 millimeters) in diameter-about the size of a pinpoint.
Detailed explanation-3: -Answer : 10-6 nm. Q. One fermi is equal to 10−15 metre. The radius of a proton is 1.3 fermi.
Detailed explanation-4: -6.4.2 Atomic sizes and substance densities Hydrogen has a diameter of 1Å.