A narrow tube is bent in the form of a circle of radius R, as shown in the figure. Two small holes S and D are made in the tube at the positions right angle to each other. A source placed as S generates a wave of intensity I_0 which is equally divided into two parts , one part travels along the longer path, while the other travels along the shorter path. Both the part waves meet at the point D where a detector is placed. If a minima is formed at the detector then, the magnitude of wavelength lambda of the wave produced is given by:

A narrow tube is bent in the form of a circle of radius R, as shown in

1.	A narrow tube is bent in the form of a circle of radius R, as shown in the figure. Two small holes S and D are made in the tube at the positions right angle to each other. A source placed as S generates a wave of intensity I_0 which is equally divided into two parts , one part travels along the longer path, while the other travels along the shorter path. Both the part waves meet at the point D where a detector is placed. If a minima is formed at the detector then, the magnitude of wavelength lambda of the wave produced is given by:
Answer» `2piR` `3/2 PIR` `2/5 piR` NONE of these ANSWER :C

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