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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2005

  • question_answer
    There is a rough black spot on a polished metal plate. If the plate in heated up to\[1400{}^\circ C\]and taken in a dark room, then what will be the rise in temperature

    A)  the spot will be brighter as compared to remaining part of plat.          

    B)  spot and remaining part of the plate will be equally bright                         

    C)  Neither spot nor the remaining part of the plate will be bright

    D)  the spot is less bright, as compared to remaining part of the plate

    Correct Answer: A

    Solution :

     On heating the plate upto\[1400{}^\circ C,\]black spot will emit radiation hence will be brighter.      


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