What is the function of three tiny bones in the ear?
Important Questions on Sound
Raj noticed that his pet dog was frightened and trying to hide in safe place in his house when some crackers were burst in the neighbourhood. He realized the problem and he decided not to burst crackers during diwali or for any other celebrations.
What must be the range of crackers sound?
Raj noticed that his pet dog was frightened and trying to hide in safe place in his house when some crackers were burst in the neighbourhood. He realized the problem and he decided not to burst crackers during diwali or for any other celebrations.
Name two diseases that can be caused due to noise pollution.
Name the values of Raj reflected in above act.
Once Ishita went to an opera house. She appreciated its architecture and furnishing. There were the curved ceiling, draperies, cushions and curtains perfectly placed. She also saw soundboard behind the stage. She now wondered if each of these accessories were placed for the sake of aesthetics of the hall or had a scientific reason too.
Read the given passage and answer the following questions:
Give the purpose of curtains, draperies and cushions in the opera house.
Once Ishita went to an opera house. She appreciated its architecture and furnishing. There were the curved ceiling, draperies, cushions and curtains perfectly placed. She also saw soundboard behind the stage. She now wondered, if each of these accessories were placed for the sake of aesthetics of the hall or had a scientific reason too.
Read the given passage and answer the following questions: What is the role of a curved ceiling and soundboard?
Once Ishita went to an opera house. She appreciated its architecture and furnishing. There were the curved ceiling, draperies, cushions and curtains perfectly placed. She also saw soundboard behind the stage. She now wondered, if each of these accessories were placed for the sake of aesthetics of the hall or had a scientific reason too.
Read the given passage and answer the following questions: Give some values of Ishita.
In a hot summer afternoon, a man was shouting through a megaphone. He was a 'zip-repairer'. As Arshi was preparing for her examination, she got disturbed. She inquired her father about the instrument being used by the 'zip-repairer'. The father told her that it was a megaphone also known as 'loud hailer'.
State the principle on which the megaphone works.
