What Light Is

Q.

What do you mean by a luminous object? Give example. Is moon a luminous object, as it appears bright at night? [3 MARKS]

Q.

Light is an _________ energy, which causes in us the sensation of vision.

Q.

Which of the following is a luminous object?

1. Human

2. Sun

3. Moon

4. Mars

Q.

Which of the following object is luminous?

1. Moon

2. Planets

3. Sun

4. Earth

Q. Stars are:

1. Luminous object
2. Non-luminous object
3. Artificial source of light
4. Opaque object

Q. Which of these is/are required to see an object?

1. 
   Eye
2. 
   Light
3. 
   Brain
4. 
   Object

Q.

Light itself is invisible, but causes the sensation of vision.

1. True
2. False

Q. Which of the following is a must to see an object?​

1. Light source
2. Screen
3. Glass
4. Mirror

Q. Moon being a non-luminous object glows brightly at night because it _________.

1. rotates very fast
2. absorbs sunlight
3. reflects sunlight
4. rotates very slowly

Q.

The moon is a luminous body.

1. True
2. False

Q.

Is the moon a luminous object?

Q. Which of the following is a self luminous object?

1. Candle
2. Bulb
3. CFL
4. Sun

Q.

What is light?

Q. Which of the following is a self luminous object?

1. Candle
2. Bulb
3. CFL
4. Sun

Q.

Moon is a

1. Luminous body.

2. Non-luminous body.

3. Artificial source of light.

4. None of these.

Q. Is the moon a luminous object?​ [1 mark]