Why does light take shortest path?

Why does light take shortest path? Light does travel on the path which would take the shortest time to travel between two points. This nature of light best explains the refraction of light when traveling across two mediums of different refractive index. Light does travel on the path which would take the shortest time to […]

What disorder means?

What disorder means? Disorder – An illness that disrupts normal physical or mental functions. Oxford English Dictionary. A disorder could be defined as a set of problems, which result in causing significant difficulty, distress, impairment and/or suffering in a person’s daily life. What is an example of disorder? Examples include antisocial personality disorder, obsessive-compulsive personality […]

What is mechanical efficiency is the ratio of?

What is mechanical efficiency is the ratio of? Mechanical efficiency, measure of the effectiveness with which a mechanical system performs. It is usually the ratio of the power delivered by a mechanical system to the power supplied to it, and, because of friction, this efficiency is always less than one. What causes low volumetric efficiency? […]

Why are energy transfers not 100% efficient?

Why are energy transfers not 100% efficient? The second law explains why energy transfers are never 100% efficient. Because ecological efficiency is so low, each trophic level has a successively smaller energy pool from which it can withdraw energy. This is why food webs have no more than four to five trophic levels. How can […]

Why is red a danger color?

Why is red a danger color? Why are the danger signals red in color? Ans. As the red light has the highest wavelength among all the colours, so it is scattered the least. Due to which most of the light gets reflected back and can travel longer distances through rain, fog, dust etc. to reach […]

How does the voice show work?

How does the voice show work? The Live Shows The television audience will vote to save their favorite artists and the two artists with the lowest number of votes will be sent home each week. In the end, one will be named “The Voice” and will receive the grand prize of a recording contract. How […]

How does pollution play a role in greenhouse effect?

How does pollution play a role in greenhouse effect? Some air pollutants cause the climate to warm. Greenhouse gases prevent some of that heat from leaving the atmosphere. The recent increase in greenhouse gas pollution is trapping excess heat and causing the climate to warm. Air pollution includes greenhouse gases such as carbon dioxide. What […]

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