Integration of sin⁴x.
Answer:-
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Boyle's law.
Answer:- The law states that at constant temperature the volume of a given mass of gas is inversely proportional to its pressure.(i.e V ∝1/p)
First focal point.
Answer:- The first focal point is a point on the principal axis of the lens such that a beam of light passing through it is rendered parallel to the principal axis after refraction through the lens.
Why Sun 🌞 looks reddish during sunset & sunrise ?
Answer:- During sunset & sunrise, light comes from sun have to travel more distance to reach us than the afternoon.Therefore more scattering of light occur during sunset and sunrise & the scattering phenomenon is more for that part of light which has less wavelength.Therefore during sunset & sunrise sun looks like red or orange (which has longer wavelength).
Diffusion of gases.
Answer:- The property of the gases by virtue of which they intermix with one another irrespective of the law of gravitation is called diffusion.
Stoke's treatment.
Answer:- This law states that a light wave when gets reflected from a denser medium suffers a phase change of π or path change λ/2.