Question

The bright, colorful "stripes" of a rainbow such as the one shown here follow a particular order. Drag and drop to rank each visible color of the rainbow by is wavelength, ranking them from longest wavelength to shortest wavelength. If you answer incorrectly and need to change the order of your options, click "Try Again", then drag one item until it is directly on top of a second item. This will force the second item back into the sorting queue on the left, and open a blank space on the right with which you can then re-order your options. Items in order Items (6 items) (Drag and drop into the appropriate area) Color with longest wavelength Violet & indigo

Answer 1

Electromagnetic radiation is the form of energy which travels in the fornm of waves and in which both electric and magnetic fields are operating perpendicular to each other and perpendicular to the wave of propagation.

Visible region is the portion of electromagnetic radiation and is visible to the human eye.

The wave length range of visible region is

380 nm to 740 nm or 3800 A° to 7400 A°.

Visible region corresponds to the VIBGYOR means 7 colours Violet, Indigo, Blue, Green, Yellow, Orange and Red.

In VIBGYOR, shortest wave length colour : Violet

Longest wave length colour: Red

Wave length ranges of various colours in VIBGYOR is

Violet & Indigo -380 nm to 450 nm

Blue: 450 nm to 490 nm

Green: 590 nm to 560 nm

Yellow: 560 nm to 600 nm

Orange: 600 nm to 640 nm

Red: 640 nm to 740 nm

Longest wavelength colour: Red (Rank 1)

Next longest after red: orange (rank 2)

Third longest after red and orange: Yellow (rank 3)

4th longest : Green ( rank 4)

5th longest: Blue (Rank 5)

6th longest: Violet and indigo (rank 6)