Answer:
n = 1.49
Explanation:
Given that,
Angle of incidence = 30 degrees
Angle of refraction = 19.5 degrees
We need to find the refractive index of the honey. Using Snell's law, we can find it as follows :

So, the refractive index of honey is 1.49.
Answer:
Explanation:
The concept of electric field, force acting on proton is applied and appropriate derivations were made to calculate the distance from the surface as shown in the attached file.
Answer:
Explanation:
Given
Mass of big box is M and small box is m
Tension T will cause the boxes to accelerate

where a=acceleration of the boxes
Now smaller box will slip over large box if the acceleration force will exceed the static friction
i.e. for limiting value


thus maximum tension

Dna is the way to answer this questions