MCQOPTIONS
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MCQOPTIONS
| 1. |
In the adjacent diagram, CP represents a wave front and AO and BP, the corresponding two rays. Find the condition on \[\theta \] for constructive interference at P between the ray BP and reflected ray OP |
| A. | \[\cos \theta =3\lambda /2d\] |
| B. | \[\cos \theta =\lambda /4d\] |
| C. | \[\sec \theta -\cos \theta =\lambda /d\] |
| D. | \[\sec \theta -\cos \theta =4\lambda /d\] |
| Answer» C. \[\sec \theta -\cos \theta =\lambda /d\] | |