Answer:
1. Identical to that of free fall
Explanation:
As we know that there is same external force acting on an object when it is released in the air which is given as
so here in vertical direction the acceleration is given as
so we will have
so we can say that in vertical direction the acceleration is always same while object is in vertical motion or it is in projectile motion
Answer:
Liquid's index of refraction, n₁ = 1.27
Explanation:
It is given that,
The critical angle for a liquid in air is,
We have to find the refractive index of the liquid. Critical angle of a liquid is defined as the angle of incidence in denser medium for which the angle of refraction is 90°.
Using Snell's law as :
Here,
Where
n₂ = Refractive index of air = 1
n₁ = refractive index of liquid
So,
n₁ = 1.269
or n₁ = 1.27
Hence, the refractive index of liquid is 1.27
Answer:
A True ( I Think Its True I'm Not Intirely sure)
Explanation: