## How do you find the refractive index of water?

The speed of light is faster in water. The refractive index of water is 1.3 and the refractive index of glass is 1.5. From the equation n = c/v, we know that the refractive index of a medium is inversely proportional to the velocity of light in that medium. Hence, light travels faster in water.

### What is the refractive index of concave lens?

A concave lens made of a material of refractive index n1 is kept in a medium of refractive index n2. A parallel beam of light is incident on the lens.

**What is the refractive of water?**

1.33

Material medium | Refractive index |
---|---|

Ice | 1.31 |

Water | 1.33 |

Alcohol | 1.36 |

Kerosene | 1.44 |

**How do you find the refractive index of water with respect to glass?**

∴refractive index of glass with respect to water, gμw=μaμw×μμ=μμ=23×43=89.

## What is the refractive index of water to glass?

Refractive index of water w.r.t glass is 0.909.

### What is refractive index definition Class 10?

Here, n symbolises the Refractive index. n is defined as the ratio of the sine of the angle of incidence to the sine of the angle of refraction. i.e., n = sin i / sin r. Also, the Refractive index equals the velocity of light of a given wavelength in a space (c) divided by its velocity (v) in a substance.

**When concave lens of glass is immersed in water it becomes?**

When concave lens of glass is immersed in water then its power Increases. we know refractive index is directly proportional to power of concave lens. the speed of light in air is maximum and when it enters glass lens there will be sudden change in its speed.

**When a concave lens of refractive index 1.5 is immersed in water it will become?**

In the given case, concave lens is immersed in a medium having refractive index greater than the refractive index of the material of the lens (1.65 > 1.5). Therefore, it will behave as a converging lens.

## What is the formula of concave mirror?

1/f= 1/u + 1/v. This equation is referred to as the mirror formula. The formula holds for both concave and convex mirrors.

### What is concave mirror Class 12?

It is a converging mirror. In a Concave mirror when the rays of light reflect back they meet or converge at a point that is why known as converging mirror.

**Who discovered refractive index?**

Snell’s law, in optics, a relationship between the path taken by a ray of light in crossing the boundary or surface of separation between two contacting substances and the refractive index of each. This law was discovered in 1621 by the Dutch astronomer and mathematician Willebrord Snell (also called Snellius).

**What is the value of refractive index for water and glass?**

The refractive index of water is 4/3. and of glass is 3/2.

## Why is refractive index of glass is different of refractive index of water?

Explanation: Light moves slower in glass, so glass has a higher refractive index than water. This means that light is refracted at a greater angle.

### What is refractive index?

Refractive Index (Index of Refraction) is a value calculated from the ratio of the speed of light in a vacuum to that in a second medium of greater density. The refractive index variable is most commonly symbolized by the letter n or n’ in descriptive text and mathematical equations.