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Tag: frequency

Posted on January 25, 2011

A numerical problem from Beats

Nithya asks:

  1. “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?”
  2. a
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Posted on December 15, 2010January 4, 2011

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 read more

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Posted on November 28, 2010November 28, 2010

Communication Systems : Revision Test

One mark questions

  1. What is the meant by the term attenuation ?
  2. Why ground wave transmission is restricted to 1500 kHz?
  3. Define critical
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Posted on July 19, 2010

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 read more

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Posted on February 19, 2010February 16, 2011

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 read more

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