# Is this will be the actual position of fish in water why?

## Is this will be the actual position of fish in water why?

Answer: This is all to do with the refraction of light and real and apparent depth. As the light from the fish leaves the water it bends away from the normal (right angled line to the surface). This makes the fish appear to be nearer to the surface.

## What is apparent depth?

Apparent depth in a medium is the depth of an object in a denser medium as seen from the rarer medium. Its value is smaller than the real depth.

## What is the formula of apparent depth?

real depthapparent depth=hh′=tanθ′tanθ=n. For water, n is about 43, so that the apparent depth is about 34 of the real depth. An astronomer places a photographic film, or a CCD, at the primary focus of a telescope.

## What causes apparent depth?

This effect is caused by the refraction at the surface of the water. Rays of light coming from the coin are bent away from the normal as they leave the water. When they reach the eye, they appear to come from a virtual coin, which is above the real coin.

## What is the Snell’s law in refraction How does it change on speed?

For a ray at a given incident angle, a large change in speed causes a large change in direction, and thus a large change in angle. The exact mathematical relationship is the law of refraction, or “Snell’s Law,” which is stated in equation form as n1 sinθ1 = n2 sinθ2.

violet colour

## Which Colour refracts most?

Each beam of light, with its own particular wavelength (or color), is slowed differently by the glass. Since violet light has a shorter wavelength, it is slowed more than the longer wavelengths of red light. Consequently, violet light is bent the most while red light is bent the least.

## Which Colour deviates the most and which the least?

Violet colour suffers maximum deviation and red colour suffers the least deviation.

violet light

red

## Which light is deviated the least in the spectrum of white light obtained with a glass prism?

When a beam of white light is passed through a prism , violet color bends the most and red color the least.

## Why do we observe the seven Colours when white light passes through a glass prism which component of white light deviates the least and deviates maximum?

Why do we observe the seven colours when white light passes through a glass prism? When light passes through a prism it offers different refractive indices to the different 1 wavelengths of light. Thus, each colour suffers a different deviation. The red light deviates the least.

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