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The figure shows a double slit experimen...

The figure shows a double slit experiment with P and Q as the slits. The path lengths PX and QX are `nlambda` and `(n+2)lambda` respectively, where n is a whole number and `lambda` is the wavelength. Taking the central fringe as zero, what is formed at X?

A

First bright

B

First dark

C

Second bright

D

Second dark

Text Solution

Verified by Experts

The correct Answer is:
C
For brightness, path difference `= n lamda = 2 lamda` So second is bright.
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RESONANCE ENGLISH-DAILY PRACTICE PROBLEM-DPP No.66
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  10. A solid sphere and a solid cylinder having the same mass and radius, r...

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  11. if in a string fixed at both ends, the sevents harmonic is set up, the...

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  12. A current loop consists of two identical semicircular parts each of ra...

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  14. Calculate ratio of i(1) and (i(2)+i(3))

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  15. A ray of light incident at an angle theta on a refracting face of a pr...

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  16. A body with mass 5 kg is acted upon by a force F = (-3hati + 4 hatj) N...

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  17. A uniform cubical block of mass M is attached to a pulley. One end of ...

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