NEET Physics EM Waves NEET PYQ-EM Waves

  • question_answer
    Which of the following has minimum wavelength?                                                               [AIPMT 2002]

    A)  X-rays   

    B)                   Ultraviolet rays

    C)  \[\gamma \]-rays   

    D)       Cosmic rays

    Correct Answer: D

    Solution :

    The wavelength order of waves are given below:
    Waves                          Wavelength (in Å)  X-rays                          \[1\text{ }{\AA}\] to \[100\text{ }{\AA}\]  Ultraviolet rays              \[100\text{ }{\AA}\] to \[4000\text{ }{\AA}\]  \[\gamma \]-rays                        \[0.001\text{ }{\AA}\] to \[\text{1 }{\AA}\]   Cosmic rays                 up to \[\text{4}\times \text{1}{{\text{0}}^{-3}}\text{ }{\AA}\]
    Thus, Cosmic rays have the minimum wavelength.

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