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The black body which is close to perfect body is?a) translucent glass box b) cavity radiatorc) black holesd) all of these

Answer»

The correct option is (c) black holes

A body is said to be a black body if it perfectly absorbs and radiates the energy but does not reflect it.  A pin hole box is an ideal black body. Black board and kajal although black in colour need not to be black body.



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