The time taken by a ray of light ti travel through a glass slab of thickness 2 cm and refractive index 1.5 will be
a)10^-8s
b)10^-10s
c)2×10^-8s
d)10^-12s
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Heya!!
v= 3×10^8/1.5= 2×10^8 m/s
So, t= 2×10^2/2×10^8= 10^-10s
Hence, (B)10^-10s is the correct answer
Hope it helps✌️✌️
v= 3×10^8/1.5= 2×10^8 m/s
So, t= 2×10^2/2×10^8= 10^-10s
Hence, (B)10^-10s is the correct answer
Hope it helps✌️✌️
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