Answer:
The value is 
Explanation:
From the question we are told that
The wavelength is 
The distance is of the screen is 
The width of the fifth dark spot is 
Generally the width of a fringe is mathematically represented as
=> 
=> 
=>
Answer:
The basic construction, unchanged since Torricelli's experiment in 1643, is a glass tube about three feet long, closed at one end, filled with mercury, and inverted with the open end immersed in a cistern of mercury.
Answer:
A: Opposite
Explanation:
From Newton's third law of motion, to every action there is an equal an opposite reaction. Thus, when the wave hits a fixed boundary, it is returned as a reflected wave to the starting point albeit on the other side.
