Question

4. The refractive index of water is 4/3
and glass is 3/2. The refraction index
of glass with respect to water is ()
A) 8/9 B) 9/8 C)2 D)1/2​

Answer 1

Answer:

a) 8/9

Explanation:

4/3 ÷ 3/2 = 8/9

refractive index of glass with respect to water is 8/9

Answer 2

Given

• Refractive index of water = 4/3
• Refractive index of glass = 3/2

To Find

• Refractive index of glass with respect to water

Solution

● Refractive index of water is 4/3 means that refractive index of water with respect to air is 4/3. Similarly refractive index of glass is 3/2 means refractive index of glass with respect to air is 3/2

● Here the answer can be found on finding the ratio of the refractive index of glass and that of water

✭ Refractive index of glass w.t.r water :

→ Refractive index = Refractive index of glass/Refractive index of water

→ Refractive index = (3/2)/(4/3)

→ Refractive index = 3/2 × 3/4

→ Refractive index = 9/8

∴ The answer to the question is Option B