A glass slab of thickness 8 cm contains the same number of waves as 10 cm of water when both are transverse by the same monochromatic light. If the refractive index of water is 4/3, then refractive index of glass is 

a) 
5/4 
b) 
3/2 
c) 
5/3 
d) 
16/15 
A glass slab of thickness 8 cm contains the same number of waves as 10 cm of water when both are transverse by the same monochromatic light. If the refractive index of water is 4/3, then refractive index of glass is 

a) 
5/4 
b) 
3/2 
c) 
5/3 
d) 
16/15 
(c) Let the wavelength of monochromatic light in glass be cm and in water be cm. Number of waves in 8 cm of glass=, and number of waves in 10 cm of glass . Now,
