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• CBSE×
• Class 11 Science×
• Physics×
• Waves×

# Waves Free Doubts and Solutions

## A photograph of a house occupied an area of 1.75 sq.cm on a 35mm slide.The slide is projected on to a screen and the area of the house on the screen is 1.55 sq.m.What is the linear magnification of the projector-screen system?

Asked by pb_ckt 22nd May 2019, 10:19 AM

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## How to find out the velocity of sound? Explain with an experiment.

Asked by k.manju2007 8th September 2015, 8:45 PM

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## The electromagnetic wave contain both electric and magnetic field. Light is an electromagnetic wave wich contain both magnectic field and electric field . Thus there should be deflection in compus and dammage for electric equipments ? Why this is not happening?

Asked by Vineeth K 4th December 2014, 12:59 PM

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## A train standing on a platform is blowing a whistle of  frequency 400Hz calculate 1. Frequency 2. wave length 3. the speed of the sound as observed by a person standing a few meters away from the platform toward the observer with a speed of 10Ms-1

Asked by Aakrati Gawande 26th March 2014, 6:38 PM

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## Discuss the laws of viberations of the string.

Asked by Sidharth V 24th March 2014, 5:39 PM

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## Is there any difference between waves and progressive waves. I know that progressive waves are a type of waves but i actually want to ask that (except standing waves) the normally word 'wave' used by us in common language (e.g. sound waves we talk about ) are progressive ones?

Asked by Nishtha Gupta 19th March 2014, 1:00 PM

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## According to the video on standing waves the phase difference between the two waves is 0 but yesterday i posted a que with this diagram to ask  for the phase difference (somewhat like standing waves and got the answer (pie/2)c. can you pleasse tell me the meaning of 'c' too?

Asked by Nishtha Gupta 18th March 2014, 6:41 PM

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## what is the phase difference between these twoo waves

Asked by Nishtha Gupta 17th March 2014, 10:26 PM

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## a wave travelling along a string is described by the equation y(x,t)=.05 sin(40x-5t)in which the numerical costants are in SI unit.calculate the 1)amplitude 2) wavelength  3)timeperiod.also calculate the displacement at distance 35cm and time 10s

Asked by Krishnamoorthy M R 16th March 2014, 1:10 PM