RAJASTHAN PMT Rajasthan - PMT Solved Paper-1995

  • question_answer
    There is a rough black spot on a polished surface. It is heated to a temperature \[1400{}^\circ C\] then:

    A) black spot will be seen more bright

    B) spot and plate will be seen with equal brightness

    C) neither spot nor plate will be seen bright

    D) polished surface will be seen more bright

    Correct Answer: A

    Solution :

    Black body emits more radiation at high temperature. So, black spot will glow with more brightness than remaining part of plate.


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