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In a Fresnel biprism experiment, the two positions of lens give separation between the slits as 16 cm and 9 cm respectively. What is the actual distance of separation?

(a) 12.5 cm

(b) 12 cm

(c) 13 cm

(d) 14 cm

Hrishant Goswami , 11 Years ago
Grade 10
anser 1 Answers
Navjyot Kalra

Last Activity: 11 Years ago

(b)
Separation between slits are (r1=) 16 cm and (r2=) 9 cm.
Actual distance of separation
√(r_1 r_2 )=  √(16×9)  = 12 cm

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