Question

explain two activities for the formation of artificial rainbow

Answer 1

1 activite: …… 1.fill a glass with water 2 Place the glass on a table in front of a sunny window 3 Place a sheet of paper on the floor. It could be any light color. White might be best, but try any color you prefer. 4 Wet the window with hot water. Make a Rainbow Step 5 Version 2.jpg 5 Adjust the glass and the paper until you see a rainbow.......... Activity 2:………… 1.Place a mirror inside a full glass of water. 2 Make sure the room is dark, and has white walls. 3 Shine the flashlight into the water, moving it around until a rainbow can be viewed

Answer 2

Answer:

Explanation:

Activity - I:

Select a white coated wall on which the sun rays fall.

Stand in front of a wall in such a way that the sun rays fall on your back.

Hold a tube through which water is flowing.

Place your finger to obstruct the flow of water.

Water comes from small gaps between the tube and finger like a fountain.

Observe the changes on wall while showering the water.

Activity - II:

Take a tray and fill with water.

Place a mirror in water such that it makes an angle with water surface.

Now focus white light on the mirror through the water.

Keep a white card board sheet above the water surface.

We may observe the colours VIBGYOR on the board.

The splitting of white light into different colours (VIBGYOR) is called dispersion.

So consider a white light is a collection of waves with different wavelengths.

Violet has shortest wavelength and red has longest wavelength.