Answer:
f1 / f2 = n2 / n1
Explanation:
To solve this problem, we should remember that the formula for index of refraction is defined as:
n = c / v
or
n v = c
Where,
n = index of refraction
c = speed of light
v = speed of light in the medium
Since speed of light is constant, then we can simply equate the materials 1 and 2:
n1 v1 = n2 v2
Where the speed of light in the medium (v) can be expressed as:
v = w * f
Where,
w = wavelength of light
f = frequency of light
Therefore substituting this back into the relating equation:
n1 w1 f1 = n1 w2 f1
Since it is given that the light is monochromatic, w1 = w2, this further simplifies the equation to:
n1 f1 = n2 f2
f1 / f2 = n2 / n1 (ANSWER)
Main answer: 7.68
Supporting answer: Diffraction
Diffraction of light is the phenomenon where the bending of light happens around corners such that it spreads out and illuminates areas where the formation of shadow is expected.
The diffraction of light is divided into two types:
- Fresnel diffraction: Here the division of light is from a point source and incident and diffracted wavelengths are spherical
- Fraunhoffer diffraction: Here the division of light is from a point source or multiple source and incident and diffracted wavelengths are parallel.
Here diffraction grating, is defined as an optical element that divides the light into various wavelengths.
The formula for diffraction is: dsinФ=nλ
where, d is the distance between the slits, Ф is the diffracting angle, n is the order number and λ is the wavelength.
Given, grating is 2090 grooves per centimeter for n=1,
d=n/λ
Then,
Therefore,
dsinФ=nλ
sinФ=nλ/d
Ф=
Therefore, the red light appears at an angle of 7.68
You can also refer,
https://brainly.in/question/40622849
brainly.com/question/27963385
#SPJ4
Light to Electric to kinetic
Answer:
The car would travel after applying brakes is, d = 14.53 m
Explanation:
Given that,
The time taken to apply brakes fully is, t = 0.5 s
The velocity of the car, v = 29.06 m/s
The distance traveled by the car in 0.5 s, d = ?
The relation between the velocity, displacement, and time is given by the formula
d = v x t m
Substituting the values in the above equation,
d = 29.06 m/s x 0.5 s
= 14.53 m
Therefore, the car would travel after applying brakes is, d = 14.53 m