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Acids, Bases And Salts

Question
CBSEENSC10012787
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Show that the relative refractive index of medium 2 with respect to medium 1 can be expressed as the ratio of their absolute refractive indices.

Solution
Let, n1 and n2 be the absolute refractive indices of media 1 and 2, and
v1 and v2 be the speeds of light in the two media. 

Then, 
                  n1 = cv1 
 
⇒              v1 = cn1 

and             n2 = cv2     

⇒               v2 = cn2 

But, the relative refractive index of medium 2 with respect to medium 1 is, 

                 n21 = v1v2 = c/n1c/n2 

⇒             n21 = n2n1 

Some More Questions From Acids, Bases and Salts Chapter

What is meant by the optical image of an object?

What are real and virtual images? Can these images be obtained on a screen? Give reasons in support of your answer.

Give three points of differences between real and virtual images.

What is a mirror? Mention the different types of mirrors commonly used.

Define the following terms in connection with reflection of light:
Incident ray, reflected ray, point of incidence, normal, angle of incidence and angle of reflection.

State the laws of reflection of light.

Are the laws of reflection applicable to plane surfaces also valid for curved surfaces?

State the important properties of images formed by plane mirrors.

What is lateral inversion of an image ? What is the cause of lateral inversion?

What is a spherical mirror? What are the two different types of spherical mirrors?

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