Nithya asks:
- “A source of sound frequency 256Hz is moving rapidly towards a wall with a velocity of 5m/s. How many beats per second will be heard if sound travels at a speed of 330m/s?”
- a
SET OF MUST PRACTICE QUESTIONS FOR CBSE PHYSICS CLASS XII (AISSCE PHYSICS 2011)
Hello Dear Students, If you were searching for a set of questions which you cannot afford to leave while preparing for AISSCE 2011 Physics Exam, Here it is. Please practice them carefully. If you have
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Communication Systems : Revision Test
One mark questions
- What is the meant by the term attenuation ?
- Why ground wave transmission is restricted to 1500 kHz?
- Define critical
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Wave travelling from one medium to another
Iqbal Lucky asked
“when a wave enters from air to water, its wavelength changes but
frequency remains unchanged. why”
Answer
Velocity of a wave = frequency x time period
V = ν λ
When a wave
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Oscillations and Waves :: Question Bank
Oscillations and Waves is considered as the most difficult chapters by most of the students. In many schools, these chapters are not properly discussed