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Radiation and Radioactivity
Investigator of radioactivity discovered that certain natural elements, primarily the very heavy ones, have unstable nuclei that disintegrate to emit various rays –alpha (α) ,beta(β) and gamma(γ) rays.
just after cutting of spring will extension becomes zero or not
RESISTANCE: An electric current is a flow of free electrons through a conductor. The size of current flowing through a conductor for a given applied voltage depends on: • T
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