Refraction, Law of Refraction Refractive index and Snell's law.
Ray Optics

282113 When a light ray enters from oil to glass on oilglass interface, then velocity of light changes by a factor of [ given, $\mu_{\text {oil }}=2, \mu_{\text {glass }}=3 / 2$ ]

1 $\frac{4}{3}$
2 $\frac{3}{4}$
3 3
4 1
Ray Optics

282114 If velocity of light in air is c, what will be the velocity of light in a medium of refractive index 1.4?

1 $2.1 \times 10^8 \mathrm{~m} / \mathrm{s}$
2 $1.4 \times 10^8 \mathrm{~m} / \mathrm{s}$
3 $2.8 \times 10^8 \mathrm{~m} / \mathrm{s}$
4 None of these
Ray Optics

282115 The refractive index of the material of crystal is 1.68 and that of castor oil is 1.2. When a ray of light passes from oil to glass, its velocity will change by a factor

1 $3 / 4$
2 $5 / 7$
3 $2 / 3$
4 $5 / 6$
Ray Optics

282116 Absolute refractive indices of glass and water are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. The ratio of velocity of light in glass and water will be

1 $8: 9$
2 $4: 3$
3 $8: 7$
4 $3: 4$
Ray Optics

282113 When a light ray enters from oil to glass on oilglass interface, then velocity of light changes by a factor of [ given, $\mu_{\text {oil }}=2, \mu_{\text {glass }}=3 / 2$ ]

1 $\frac{4}{3}$
2 $\frac{3}{4}$
3 3
4 1
Ray Optics

282114 If velocity of light in air is c, what will be the velocity of light in a medium of refractive index 1.4?

1 $2.1 \times 10^8 \mathrm{~m} / \mathrm{s}$
2 $1.4 \times 10^8 \mathrm{~m} / \mathrm{s}$
3 $2.8 \times 10^8 \mathrm{~m} / \mathrm{s}$
4 None of these
Ray Optics

282115 The refractive index of the material of crystal is 1.68 and that of castor oil is 1.2. When a ray of light passes from oil to glass, its velocity will change by a factor

1 $3 / 4$
2 $5 / 7$
3 $2 / 3$
4 $5 / 6$
Ray Optics

282116 Absolute refractive indices of glass and water are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. The ratio of velocity of light in glass and water will be

1 $8: 9$
2 $4: 3$
3 $8: 7$
4 $3: 4$
Ray Optics

282113 When a light ray enters from oil to glass on oilglass interface, then velocity of light changes by a factor of [ given, $\mu_{\text {oil }}=2, \mu_{\text {glass }}=3 / 2$ ]

1 $\frac{4}{3}$
2 $\frac{3}{4}$
3 3
4 1
Ray Optics

282114 If velocity of light in air is c, what will be the velocity of light in a medium of refractive index 1.4?

1 $2.1 \times 10^8 \mathrm{~m} / \mathrm{s}$
2 $1.4 \times 10^8 \mathrm{~m} / \mathrm{s}$
3 $2.8 \times 10^8 \mathrm{~m} / \mathrm{s}$
4 None of these
Ray Optics

282115 The refractive index of the material of crystal is 1.68 and that of castor oil is 1.2. When a ray of light passes from oil to glass, its velocity will change by a factor

1 $3 / 4$
2 $5 / 7$
3 $2 / 3$
4 $5 / 6$
Ray Optics

282116 Absolute refractive indices of glass and water are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. The ratio of velocity of light in glass and water will be

1 $8: 9$
2 $4: 3$
3 $8: 7$
4 $3: 4$
Ray Optics

282113 When a light ray enters from oil to glass on oilglass interface, then velocity of light changes by a factor of [ given, $\mu_{\text {oil }}=2, \mu_{\text {glass }}=3 / 2$ ]

1 $\frac{4}{3}$
2 $\frac{3}{4}$
3 3
4 1
Ray Optics

282114 If velocity of light in air is c, what will be the velocity of light in a medium of refractive index 1.4?

1 $2.1 \times 10^8 \mathrm{~m} / \mathrm{s}$
2 $1.4 \times 10^8 \mathrm{~m} / \mathrm{s}$
3 $2.8 \times 10^8 \mathrm{~m} / \mathrm{s}$
4 None of these
Ray Optics

282115 The refractive index of the material of crystal is 1.68 and that of castor oil is 1.2. When a ray of light passes from oil to glass, its velocity will change by a factor

1 $3 / 4$
2 $5 / 7$
3 $2 / 3$
4 $5 / 6$
Ray Optics

282116 Absolute refractive indices of glass and water are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. The ratio of velocity of light in glass and water will be

1 $8: 9$
2 $4: 3$
3 $8: 7$
4 $3: 4$
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