An equiconvex lens of focal length 10 cm (in air) and R.I. 3/2 is put at a small opening on a tube of length 1 m fully filled with liquid of R.I. 4/3. A concave mirror of radius of curvature 20 cm is cut into two halves M_(1)andM_(2) and placed at the end of the tube. M_(1)andM_(2) are placed such that their principal axes AB and CD respectively are separated by 1 mm each from the principal axis of the lens. A slit S placed in air illuminates the lens with light of frequency 7.5xx10^(14)Hz. The light reflected from M_(1)andM_(2) forms interference pattern on the left end EF of the tube. O is an opaque substance to cover the hole left by M_(1)andM_(2). Width of the fringes on EF is (x xx10)mum. Find the value of x.

An equiconvex lens of focal length 10 cm (in air) and R.I. 3/2 is put

1.	An equiconvex lens of focal length 10 cm (in air) and R.I. 3/2 is put at a small opening on a tube of length 1 m fully filled with liquid of R.I. 4/3. A concave mirror of radius of curvature 20 cm is cut into two halves M_(1)andM_(2) and placed at the end of the tube. M_(1)andM_(2) are placed such that their principal axes AB and CD respectively are separated by 1 mm each from the principal axis of the lens. A slit S placed in air illuminates the lens with light of frequency 7.5xx10^(14)Hz. The light reflected from M_(1)andM_(2) forms interference pattern on the left end EF of the tube. O is an opaque substance to cover the hole left by M_(1)andM_(2). Width of the fringes on EF is (x xx10)mum. Find the value of x.
Answer» 5 m 3 m 6 m 4 m Answer :C

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