Answer:
1.97 x 10^8 m/s
Explanation:
refractive index of crown glass with respect to air, n = 1.52
speed of light in air, c = 3 x 10^8 m/s
Let v be the speed of light in crown glass.
By use of the definition of refractive index
[tex]n = \frac{c}{v}[/tex]
where, n be the refractive index of crown glass, c be the speed of light in vacuum and v be the speed of light in crown glass
[tex]1.52 = \frac{3 \times 10^{8}}{v}[/tex]
[tex]v = \frac{3 \times 10^{8}}{1.52}[/tex]
v = 1.97 x 10^8 m/s
Thus, the speed of light in crown glass is 1.97 x 10^8 m/s.
