Which is the correct ascending order of wavelengths?

• A

  ${\lambda }_{\mathrm{visible} }<{\lambda }_{\mathrm{X}-\mathrm{ray}}<{\lambda }_{\mathrm{gamma}-\mathrm{ray} }<{\lambda }_{\mathrm{microwave} }$
• Correct answer
  B

  ${\lambda }_{\mathrm{gamma}-\mathrm{ray} }<{\lambda }_{\mathrm{X}-\mathrm{ray}}<{\lambda }_{\mathrm{visible} }<{\lambda }_{\mathrm{microwave} }$
• C

  ${\lambda }_{\mathrm{X}-\mathrm{ray}}<{\lambda }_{\mathrm{gamma}-\mathrm{ray} }<{\lambda }_{\mathrm{visible} }<{\lambda }_{\mathrm{microwave} }$
• D

  ${\lambda }_{\mathrm{microwave} }<{\lambda }_{\mathrm{visible} }<{\lambda }_{\mathrm{gamma}-\mathrm{ray} }<{\lambda }_{\mathrm{X}-\mathrm{ray}}$

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