Two slits separated by a distance of d = 0.190 mm are located at a distance of D = 1.91 m from a screen. The screen is oriented parallel to the plane of the slits. The slits are illuminated by a monochromatic and coherent light source with a wavelength of ? = 648 nm. A wave from each slit propagates to the screen. The interference pattern shows a peak at the center of the screen (m=0) and then alternating minima and maxima.

At what angle from the beam axis will the first (m=1) maximum appear? (You can safely use the small angle approximation.)

Explanation:

wavelength

d = 0.190 mm = 0.190 × 10⁻³ m

D = 1.91 m

By using the formula:

The first maximum will appear at an angle from the beam axis

come closer and become far apart and become steam/gas

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.