For each statement below, select True or False 1 Red light strikes two narrow sl

Question

For each statement below, select True or False

1 Red light strikes two narrow slits and an inteference pattern is observed on a screen. As the distance separating the two narrow slits is decreased, the interference pattern observed on the screen will get wider.

2.As the wavelength of light hitting a single slit is increased, the diffraction pattern observed on a screen will get wider.

3.When a diffraction grating is illuminated by white light, the first order maximum for green light is closer to the central maximum than the first order maximum for red light.

Explanation / Answer

1 - true

fringe width is inversaly proportional to distance between slits so interference pattern become wider

2 - true

width of diferection pattern is proportional to wavelength

3 - true

Larger wavelength have larger wisth so they are separated from central maximum at more distance compare to light of lower wavelength. green light have lower wavelength then red.

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