Question

If ${\lambda }_v,{\lambda }_x,{\lambda }_m$ represents the wavelengths of vision, X-ray and microwaves respectively then

• A. ${\lambda }_m>{\lambda }_x>{\lambda }_v$
• B. ${\lambda }_m>{\lambda }_v>{\lambda }_x$
• C. ${\lambda }_v>{\lambda }_x>{\lambda }_m$
• D. ${\lambda }_v>{\lambda }_m>{\lambda }_x$

Answer 1

The correct option is B ${\lambda }_m>{\lambda }_v>{\lambda }_x$

The above diagram shows the increasing order of wavelength for different waves from gamma rays to radio waves.

According to the diagram, among X-rays, micro waves and visible rays, the micro waves have the largest wavelength and X-ray has the smallest.

$⟹$ ${\lambda }_m>{\lambda }_v>{\lambda }_x$