The required value of the index of refraction of glass is 1.5.
Given data:
The speed of light in a vacuum is, 
.
The speed of light in a glass is, 
.
Light has the tendency to travel from one medium to another, then the difference between the speeds of light in various mediums is determined by a term, known as the index of refraction. The mathematical expression for the index of refraction of glass is,
n = c / v
Solving as
Thus, we can conclude that the required value of the index of refraction of glass is 1.5.
Learn more about the index of refraction here:
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Answer:
Explanation:
Given
A plastic rod is rubbed with a woolen cloth and the Glass rod is rubbed with silk rod.
After the rubbing Plastic rod will acquire the negative rod and the glass rod will acquire a positive charge.
(a)If an object repels the plastic rod then it must be of the same nature i.e. of negative charge.
As the object is negative in nature it will attract the glass rod.
(b)Another object is attracting the plastic rod i.e. the object must be positively charged as a plastic rod. This happens because the opposite charge attracts and same charge repel each other.
It will repel the glass rod
The Earth rotates due to the manner in which it was formed. Earth began its rotation from the spinning movement of the accretion disk. In short, the earth rotates because of angular momentum caused by the accretion disk.
Gateway is what controls what enters and exits the cell
