# Why does a pencil immersed in water appear bent?

## Why does a pencil immersed in water appear bent?

A:It all has to do with the fact that light travels more slowly in water than it does in air, and that causes the light to bend when it goes from water to air, or vice versa. And that makes the pencil look like it bends slightly where it enters the water.

## Why does a stick immersed in water appear to be bent draw appropriate Labelled diagram?

When a stick is half immersed in water, it appears to be bent at the surface due to the refraction of light. The light ray OC coming from the lower end O of the stick passes from water to air and gets refracted away from the normal in the direction CX.

When a pencil is partly immersed in water and held obliquely?

It is the phenomenon of refraction due to which a pencil partly immersed in water and held obliquely appears to be bent at the water surface.

When a pencil is partly immersed in water in a slanting position the immersed position appears?

When a pencil is partly immersed in water and held in a slanting position, it appears to be bent at the boundary separating water and air.

### Why a coin appears raised in water?

It happens due to the, phenomenon of refraction of light. The point from which the refracted rays appear to come gives the apparent position of the coin. As the rays appear to come from a point above the coin, therefore, the coin seems io be raised.

### Why a tank full of water appears less deep?

(a) A tank full of water appears less deep than it actually is due to the refraction of light which takes place when light rays pass from the tank of water into air.

When a pencil is partially immersed in water and held obliquely?

When a pencil is partially immersed in water and held obliquely to the surface the pencil appears to bend at the water surface?

Assertion: When a pencil is partly immersed in water and held obliquely to the surface, the pencil appears to bend at the water surface. Reason: The apparent bending of the pencil is due to the refraction of light when it passes from water to air.

#### Why a straight stick partly dipped in water obliquely appears to be bent at the surface of water?

A straight stick partly dipped in water obliquely, appears to be bent at the surface of water because of the refraction. The light refracted from the water to air shifts away from the normal making the stick to be bent at the surface of water.

#### Why does light bend when it passes from air into glass?

Light waves change speed when they pass across the boundary between two substances with a different density , such as air and glass. This causes them to change direction, an effect called refraction . the light speeds up going into a less dense substance, and the ray bends away from the normal.

Why does a pool of water appears to be less deep than it actually is explain with the help of diagram?

A pool of water appears to be less deep than it actually is because light rays from bottom of pool are bent away from the normal as they pass from water into the air. This makes the pool appear shallower than it really is.

Why does a pool of water appears to be less deep than it actually is explain with the help of Diagram 1?

This is due to the refraction of light which takes place when light rays pass from the tank of water into air. When we look into the tank, we do not see the actual bottom of the tank, we see a virtual image of the bottom of the pool which is formed by the refraction of light coming from the water into the air.

## Why does a pencil partly immersed in water appear to be bent at the?

(1) When a pencil is partly immersed in water and held in a slanting position, the rays of light coming from the immersed part of the pencil emerge from water (a denser medium) and enter air (a rarer medium). Hence, a pencil dipped obliquely in water appears bent at the surface of the water.

## How is Twilight formed due to refraction of light?

(c) Twilight is formed, before the sunrise or sun set due to refraction of sun light as even when the sun is below the horizon its rays manage to reach the earth due to refraction. (d) Stars twinkle : because of refraction of light as light passes through different layers of air of different densities mix, changes the apparent position of star.

Why does a stamp appear raised under a glass block?

(b) A stamp placed under a glass block appears raised because of refraction of light as light travels from denser to rarer medium, also due to R.I of glass observed depth is less than real depth.

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