## What is the refractive index of concave mirror?

When there is no water in the mirror, the centre of curvature is located at C, and the Page 4 Refractive index of a transparent liquid measured with a concave mirror 4 radius of curvature is R = CV . From (1), the focal length of the concave mirror is f = FV = R/2.

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

Based on Equation (1), the group refractive index of water can be thus calculated as: 96.676/70.762 = 1.36621. The water conditions were: 14.4 °C temperature and 999.2 kg/m3 density, and based on the empirical formula, the group refractive index of water can be calculated to be 1.36622.

**How is the refractive index of a transparent liquid measured?**

This paper describes the spherical concave mirror method for measuring the index of refraction of transparent liquids. We derived the refractive index equation using Snell’s law and the small-angle approximation. We also verified the validity of this method using the traditional spherical mirror and thin-lens Gaussian equations.

**How to calculate the refractive index of a concave mirror?**

radius of curvature is R = C V . From (1), the focal length of the concave mirror is f = F V = R / 2. When the mirror is ﬁlled with water, the apparent centre of curvature C ′ mov es down, and the apparent radius of curvature becomes R ′ = C ′ V. The new focal length is given by f ′ = F ′ V = R ′ / 2. mirror.

### How to find refractive index of liquid with convex lens?

Take a few drops of transparent liquid on the plane mirror and put the convex lens over it with its same face above as before (A piano concave liquid lens is formed between plane mirror and convex lens). Repeat steps 6, 7 and 8. Record your observations as given below. Rough focal length of convex lens =……… cm.

### How do you put a convex lens on a plane mirror?

Take any one convex lens and find its rough focal length. Take a plane mirror and place it on the horizontal base of the iron stand. Place the convex lens on the plane mirror. Screw tight the optical needle in the clamp of the stand and hold it horizontally above the lens at distance equal to its rough focal length.