Question

If a plane glass slab is placed on the letters of different colours, the red coloured letters appears more and more raised up? $(Hint:\Delta t=t(1-\frac{1}{\mu }))$

• A. True
• B. False

Answer 1

The correct option is A True

The apparent shift caused by glass slab of thickness 't' is given by,

$\Delta x=t(1-\frac{1}{\mu })$

As refractive index of glass is maximum for red light, so red colored letters are more raised up.