Instruction:

Set the wavelength of the light and the slit separation.

Observe the interference pattern formed on the screen.

5 mm 0 −5 mm

Wavelength:

400 nm 700 nm
400 nm

Slit Separation:

0.1 mm 0.3 mm
0.1 mm

Pause

Wave Nature of Light

Young's double slit experiment I

Task 1

Find out how the interference pattern changes when the wavelength of the light is increased.

The separation between bright and dark fringes increases.

Task 2

Find out how the interference pattern changes when the slit separation is increased.

The separation between bright and dark fringes decreases.