Haryana PMT Haryana PMT Solved Paper-2004

  • question_answer
    A fire screen produces sensation of cooling as :

    A)  it allows both infrared and visible light but cuts off ultraviolet

    B)  it allows infrared and cuts off shorter wavelengths

    C)  it cuts off both visible light and infrared

    D)  it allows only visible light and, cuts off infrared

    Correct Answer: D

    Solution :

                                             As. we know that infrared radiation produce heating. A fire screen does not allow the infrared radiation but allows the visible light, therefore we can see the fire.


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