Question 1 What is the frequency of sound wave whose time period is 0.07sec? Question 2 Define the term frequency? Question 3 Define the term wavelength? Question 4 Define the term wavelength? Question 5 Define the term amplitude? Question 6 What is the S.I. unit of frequency? Question 7 The wave travels in a coiled spring at a rate of 4m/s.The distance … [Read more...] about Characteristics of Waves
Class 9
Transverse Wave
Question 1 What are transverse waves? Question 2 What is crest? Question 3 What is trough? Question 4 Give examples of transverse waves? Transverse Waves A wave in which the particles of medium vibrate up and down at right angle to direction in which wave is moving is called transverse wave. Transverse wave can be produced only in solid and liquids but not in … [Read more...] about Transverse Wave
Longitudinal Waves
Question 1 What is a longitudinal wave? Question 2 What type of wave are illustrated by the movement of rope whose one end is fixed to a pole and the other end is moved up and down? Question 3 Write the characteristics of longitudinal wave graph? longitudinal Waves The waves which travel along a spring when it is pushed and pulled at one end are longitudinal … [Read more...] about Longitudinal Waves
Power
Question 1 A body does 20 joules of work in 5 sec. What is its power? Question 2 What is the power of a pump which takes 10 sec to lift 100 kg of water tank situated at a height of 20 m? Question 3 Define the term power? Question 4 Give the S.I. unit of power? Question 5 Define the term watt? Question 6 How many watts equal one horse power? Question 7 The … [Read more...] about Power
Law of Conservation of Energy
Question 1 Define the law of conservation of energy? Law of Conservation of Energy Whenever energy gets transformed, the total energy remains unchanged. According to this law, energy can only be converted from one form to another, it can neither be created or destroyed. The total energy before and after transformation remains same. Ball, mass, m, height, h, above the … [Read more...] about Law of Conservation of Energy