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  • This question has Statment- 1 and Statement- 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement 1 : 

This question has Statment- 1 and Statement- 2. Of the four choices given after the Statements, choose the one that best describes the two Statements.

Statement 1 : In young's double slit experiment, the number of fringes observed in the field of view is small with longer wave length of light and is large with shorter wave length of light.

Statement 2 : In the double slit experiment the fringe width depends directly on the wave length of light.

Option: 1

Statement 1 is true, Statement 2 is true and the Statement 2 is not the correct explanation of Statement 1


Option: 2

Statement 1 is false and Statement 2 is true


Option: 3

Statement 1 is true, Statement 2 is true and the Statement 2 is true explanation of Statement 1


Option: 4

Statement 1 is true and Statement 2 is false 


Answers (1)

best_answer

The Fringe width is given as

\beta = \frac{\lambda D}{d}

i.e In the double-slit experiment the fringe width depends directly on the wavelength of light.

And so the number of fringes observed in the field of view is inversely proportioned to \lambda

 

And the number of fringes observed in the field of view is obtained by \frac{d}{\lambda }

So Statement 1 true and statement 2 is true and Statement 2 is a the true explanation of Statement 1

Posted by

Shailly goel

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