Q126 / 200 · NEET 2002 · Physics

Which is having a minimum wavelength?

  • A
    X-rays
  • B
    Ultraviolet rays
  • C
    $\gamma$-rays
  • Correct answer
    D
    Cosmic rays

Solution

Cosmic rays, having very short wavelength. Wavelengths $\rightarrow$ $\mathrm{X}$-ray $\Rightarrow 1 Å$ to $100 Å$ Ultraviolet rays $\rightarrow 100 Å$ to $1 Å$ V-rays $\rightarrow 0.001 Å$ to $1 Å$ Cosmic rays $\rightarrow$ upto $4 \times 10^{-3} Å$

Hence, the correct answer is option: 'D'.

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