Question

Statement 1 :Two longitudinal waves givrn by equation : y1(x,t)=2asin(wt-kx) and y2(x,t)=asin(2wt-2kx) will have equal
intensity
Statement 2: Intensity of waves of given frequency in same medium is proportional to square of amplitude only...
1) Statement 1 is false,statement 2 is true
2) statement 2 is false ,statement 1 is true....

Answer 1

Intensity \(\alpha \) (amplitude)^2

Answer 2

So u mean ans is 2. ..

Answer 3

Sorry 1

Answer 4

yup

Answer 5

Bt the ans is 2

Answer 6

I were also getting same ans as urs...

Answer 7

O.o

Answer 8

\(\rm y2(x,t)=asin(2wt-2kx)\)
\(\rm y1(x,t)=asin(\color{red}{2}wt-\color{red}{2}kx)\)

Answer 9

What u did in the equation of y1?

Answer 10

m joking LOL

Answer 11

Wow..it killed me ....

Answer 12

@Astrophysics =^-^=

Answer 13

@Directrix

Answer 14

@parthkohli pls..help

Answer 15

@mayankdevnani

Answer 16

As long as we are not told what type of wave it is and what y represents, we cannot decide if statement 1 is right or wrong.

Answer 17

Y is the displacement of wave particle in y direction ...
N the y(x,t) represents that displacement of a particle of wave progressing towards x direction at a particular time t...

Answer 18

sound wave produced when any object get some disturbance , sound wave with same amplitude must have same a to have same intensity since these two equation dont have it , so we may conclude this two wave dont have same intensity.
For the next question we can say that the intensity is actually the square of amplitude.

Answer 19

That's the way things seem to be taught in India : intensity of a mechanical wave depends on amplitude squared AND frequency squared.
So, statement 1 is true since both intensities will be given by 4a²w²

The real reason is different, namely because y does not lead to any meaningful energetical quantity (velocity does).

Answer 20

Have a look at my answer at the bottom of :
http://openstudy.com/study#/updates/56b5ccafe4b067e118210e94

Answer 21

option 2 is correct answer !

Answer 22

@samigupta8

Answer 23

Yep it is....

Answer 24

@mayankdevnani wud u explain??

Answer 25

another tukka !

Answer 26

aur voh bhi sahi

Answer 27

Yrr pls tukka mat lagao...

Answer 28

lol..kya karu iske illava mujhe aati hi kya h

Answer 29

Bhut kuch...

Answer 30

Tarika btao plss

Answer 31

now be serious
move onto your question

Answer 32

do you know the formula AVERAGE INTENSITY ?

Answer 33

Okk...i know it bt derivation is vague

Answer 34

derivation is too easy

Answer 35

Well , I will get the ans of this question if i know the derivation of it....

Answer 36

Tell ...then?

Answer 37

Now plss...don't say that power/area = intensity...

Answer 38

Okk...i should clearly say that i don't know the derivation of average power transmitted in a wave

Answer 39

god! power derivation is too long and too lenghty

Answer 40

*lengthy

Answer 41

Pls...do tell me

Answer 42

Okk, i will show u the derivation proposed by my sir...n in that i m confused over a particular part...u have to solve that ...will u ?

Answer 43

yep

Answer 44

So i will send to ur hangouts

Answer 45

i will suggest you that there is no time to study derivation.

Answer 46

go to formula and crack questions easily !

Answer 47

Arey pichle saal ka doubt h abhi tk chl ra h

Answer 48

and btw there is nothing need of derivation in this particular section.

Answer 49

Pls...open it. ..