The conical projection in ferr'y black body is
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Explanation:
Fery's black body consists of a double walled hollow sphere having a small opening O on one side and a conical projection P just opposite to it (Figure). Its inner surface is coated with lamp black.
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Explanation:
Fery's black body consists of a double walled hollow sphere having a small opening O on one side and a conical projection P just opposite to it (Figure). Its inner surface is coated with lamp black.
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