Answer:
option A
Explanation:
given,
light is incident on the plane surface at (i) = 55°
angle of refraction (r) = 37°
μ is the refractive index of the material
using Snell's law
The refractive index of the material is
hence, the correct answer is option A
Answer:
It can exert a greater force through a greater distance than the force used on the machine.
Explanation:
A machine is a device that makes work easier and so it should exert greater force than the force applied on it.
The direction of the magnetic force is to the right.
<h3>What is the magnetic field?</h3>
The magnetic field is the region in space where the influence of the magnet is felt. The magnetic force is always in the direction of the magnetic field.
We can see from the image, that the direction of the magnetic force is to the right.
Learn more about magnetic field:brainly.com/question/14848188
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Answer:
three halves of a wavelength
Explanation:because a
path difference between waves at minimum is (2n+1)*wavelength /2 therefore at second minimum it is for n=1=1.5 times a wavelength. or three halves a wavelength