Answer:
The fractional Intensity
= 0.0146
Given:
wavelength of the light, 
slit and screen separation difference, D = 130 cm = 1.3 m
distance of the point from the center of the principal maximum, y = 4.10 mm = 0.041 m
slit width, d = 0.420 mm = 
Solution:
To calculate the fractional intensity, we use the given formula:
(1)
For very small angle:
(2)
where


Using eqn (2):

Now, using eqn (1):

Answer:
Resistance is the opposing of the flow of current through a conductor.
Answer:

Explanation:
The total momentum of the system must conserve by the law of momentum conservation.
( 1 )
If you consider the shock between the ball and the truck as totally elastic, and also if the truck is much more massive than the ball, you can assume that the truck does not move when the ball hits it.
Then the truck is always at rest
Hence, you have in the expression ( 1 ):

Answer:
Waves interact with matter in several ways. The interactions occur when waves pass from one medium to another. The types of interactions are reflection, refraction, and diffraction. Each type of interaction is described in detail below.
The area of the velocity time graph gives displacement of the body true or false?
The answer this is true.