Ray of Light

Q.

What are the necessary things required to see object?

Q.

Differentiate between: Absorption of light and transmission of light:

Q.

What is reverse photoelectric effect?

Q.

Which of the following best depicts how we see objects?

1. 

2. 

3. 

4. Both b and c

Q.

How do we see things? Is light necessary for seeing things?

Q. Choose the correct statement.
1. We can see many things kept in a room during the day on which sunlight does not fall directly.
2. We can see an object even if light from that object does not reach our eyes.
3. We can see trees, walls, books, and more because they reflect the light falling on them in all directions.
4. We can see the objects around us even without reflection of light from the objects.

1. 2 and 3
2. 1 and 3
3. 2 and 4
4. 1 and 2

Q.

A light-ray behaves as:

1. particle

2. Particle and wave nature depending on the situation

3. wave

4. both particle and wave

Q.

By giving at least four examples, define the following terms :

Translucent bodies :

Q. Define light.

Q.

How do we see objects?

1. Light from our eyes leaves and illuminates the objects.

2. Every object is a light source and sends light to our eyes

3. Light from a light source is reflected by the object and when these fall on our eyes we see the object

4. All of these

Q. Is light opaquue or not

Q.

Light can exihibit the properties of

1. Wave

2. Ray

3. Particle

4. All of these

Q.

Which of the following best depicts how we see objects?

1. 

2. 

3. 

4. Both b and c

Q. How does light travel?

Q.

WHY THE TRANSPARENT GLASS OF WINDOW IF NOT WIPED OFF REGULARLY APPEARS HAZY ?

Q. Which among the following objects must be used to cover the window of a room, so that the room remains dark during the day time?

1. Glass pane
2. Butter paper
3. Wooden board
4. Tracing paper

Q. Which of the following materials are translucent in nature?

1. White chalk
2. Fluoroscent bulb
3. Paper dipped in oil
4. Blue coloured glass