How has India got its present name
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Answer. The name India is derived from Indus, which originates from the Old Persian word Hinduš. The latter term stems from the Sanskrit word Sindhu, whichwas the historical local appellation for the Indus River. The ancient Greeks referred to the Indians as Indoi, which translates as "the people of the Indus

Explanation:

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.