Question

find the time taken by light to travel a distance of 3cm in glass
c=3×10⁸ , miu glass =3÷2
​

Answer 1

Answer:

Explanation:

Speed of light in water =  

μ

C

​

 

                                   =  

4/3

3×10  

8

 

​

 

                                   =  

4

9

​

×10  

8

 m/s

                 Time taken  =  

speed

distance

​

 

                                   =  

4

9

​

×10  

8

m/s

3×10  

−2

m

​

 

                                   

                                   =  

3

4

​

×10  

−10

 sec

                                    =1.333×10  

−10

 sec  

Answer 2

Answer:

the time taken by light to travel a distance of 3cm in glass is (c=3A-108m/s a refractive index of water = 4/3)