Regular and Irregular Reflection

Q.

Write the definition of regular reflection and irregular reflection.

Q. The phenomenon of bouncing back of the light is known as ___.

1. reflection of light
2. refraction of light
3. diffraction of light
4. dispersion of light

Q.

Sunlight does not reach directly in our rooms, but we can see things in our rooms.This is because of

1. Regular reflection

2. Irregular reflection

3. Plane reflection

4. All of the above

Q.

Why is this statement FALSE

During night time, in a pond of water you can see the image of the moon. It is because of the rectilinear propagation of light.

Q.

In irregular reflection or diffused reflection, laws of reflection are not applicable

1. False

2. True

Q.

When the rays reflected from a surface are scattered in different directions, then the reflection is known as:

1. Irregular reflection

2. Diffused or Irregular reflection

3. Regular reflection

4. Diffused reflection

Q.

We see most of the things around us by_______ (regular reflection / diffuse reflection)

Q.

Red and green beams of light fall on a white ball. Of what colors will the ball appear to be?

Q.

Diffused reflection takes place on polished surfaces. State if the statement is true or false.

1. False

2. True

Q.

Bouncing back of the light from the surface of an object is called ______.

Q.

When you want to illuminate a larger area then which type of reflection you will choose?

1. Regular reflection

2. Both can be used

3. None of these

4. Irregular reflection

Q.

An object becomes invisible when it undergoes

1. Irregular reflection

2. Regular reflection

3. diffused reflection

4. Normal reflection

Q.

What do you mean by the term ' reflection of light ' ?

Q.

The statements given below are incorrect. Write the correct statements.

The phenomenon in which a ray of light, traveling from one optical medium to another optical medium, bounces off from its surface with the change of angle,
is called refraction of light.

Q. Statement I: Reflection from a plane mirror is an example of irregular reflection.
Statement II: All kinds of reflections obey the laws of reflection.

1. Only statement II is true.
2. Both statements are false.
3. Only statement I is true.
4. Both statements are true.

Q. Sort the following objects in descending order based on the amount of light reflected by them.

1. Sandpaper
2. Coal
3. Polished wood
4. Glazed tile
5. Plane mirror

Q. Which of the following is true regarding diffused reflection?

1. On a rough surface, light is reflected in different directions.
2. On a smooth surface, light is reflected in different directions.
3. Light is completely absorbed.
4. Light is not reflected.

Q. The phenomenon by which the incident light falling on a surface is sent back is known as ___ .

Q. Sort the following objects in descending order based on the amount of light reflected by them.

• Sandpaper
• Coal
• Polished wood
• Glazed tile
• Plane mirror

Q. Regular reflection takes place from smooth surface.

1. False
2. True

Q. Bouncing back of light from a rough surface is an example of ___.

1. irregular reflection
2. regular reflection
3. absorption
4. single reflection

Q. When a set of parallel rays undergo diffused reflection, the reflected rays are scattered in random direction.

1. False
2. True

Q.

When light strikes smooth or rough surface it always bounces back in the same medium.

1. True

2. False

Q. (a) A wall reflects light and a mirror also reflects light. What difference is three in the way they reflect light?
(b) Which type of reflection of light leads to the formation of images?

Q. Which of the following is /are type of reflection ?

1. Regular reflection
2. Irregular reflection
3. Diffused reflection
4. All of the above

Q. What is the irregular reflection? Give an example

Q. What is the difference between regular reflection of light and diffuse reflection of light? What type of reflection of light takes place from:

(a) a cinema screen
(b) a plane mirror
(c) a cardboard
(d) still water surface of a lake