Question

Activity 2: intensity of light In this activity, you should be able to see that the brightness of light is dependent on the distance of the source. Materials needed Flashlight Meter Stick Intensity Distance from Light Source 1. Hold your flashlight and put it on 2. Put off the light of your room. 3. Aim the flashlight on the wall, measure one meter away from it. Observe the brightness of light. 4. Move the light source farther away from the wall by ½ meter. Observe the brightness of light. 5. Move as far as you can in the room (by half meter). 6. Rank the observed brightness. Copy and complete this table in your notebook. Distance from the Wall (m) 1.0 1.5 2.0 2.5 3.0 Observation Rank How would you relate the apparent brightness of light with the distance from the source?

          Activity 2: intensity of light
In this activity, you should be able to see that the brightness of light is dependent
on the distance of the source.
Materials needed
Flashlight
Meter Stick
Intensity Distance from Light Source
1. Hold your flashlight and put it on
2. Put off the light of your room.
3. Aim the flashlight on the wall, measure one meter away from it. Observe
the brightness of light.
4. Move the light source farther away from the wall by ½ meter. Observe the
brightness of light.
5. Move as far as you can in the room (by half meter).
6. Rank the observed brightness. Copy and complete this table in your
notebook.
Distance from the
Wall (m)
1.0
1.5
2.0
2.5
3.0
Observation
Rank
How would you relate the apparent brightness of light with the distance from the
source?

Activity 2: intensity of light
In this activity, you should be able to see that the brightness of light is dependent
on the distance of the source.
Materials needed
Flashlight
Meter Stick
Intensity Distance from Light Source
1. Hold your flashlight and put it on
2. Put off the light of your room.
3. Aim the flashlight on the wall, measure one meter away from it. Observe
the brightness of light.
4. Move the light source farther away from the wall by ½ meter. Observe the
brightness of light.
5. Move as far as you can in the room (by half meter).
6. Rank the observed brightness. Copy and complete this table in your
notebook.
Distance from the
Wall (m)
1.0
1.5
2.0
2.5
3.0
Observation
Rank
How would you relate the apparent brightness of light with the distance from the
source?

Added by John R.

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