A circular disc is placed in front of a narrow source. When the point of observation is at a distance of 1 meter from the disc, then the disc covers first HPZ. The intensity at this point is I_(0) . The intensity at a point distance 25 cm from the disc will be

A circular disc is placed in front of a narrow source. When the point

1.	A circular disc is placed in front of a narrow source. When the point of observation is at a distance of 1 meter from the disc, then the disc covers first HPZ. The intensity at this point is I_(0) . The intensity at a point distance 25 cm from the disc will be
Answer» `I_(1)=0.531I_(0)` `I_(1)=0.053I_(0)` `I_(1)=53I_(0)` `I_(1)=5.03I_(0)` ANSWER :A

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A circular disc is placed in front of a narrow source. When the point of observation is at a distance of 1 meter from the disc, then the disc covers first HPZ. The intensity at this point is I_(0) . The intensity at a point distance 25 cm from the disc will be

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