A parallel beam of monochromatic light of wavelength $$6000$$ $$A0$$ is incident normally on a narrow slit of width of $$0.002$$ mm . The light is focussed by a convex lens on a screen placed on a focal plane. The first minimum is formed for the angle of diffraction equal to

Question

A  parallel beam of monochromatic light of wavelength $$6000$$ $$A0$$       is incident normally on a narrow slit of  width of  $$0.002$$ mm     . The light is focussed by a convex lens on a screen placed  on a focal plane. The first minimum is formed for the angle of diffraction  equal to

Infinity Learn · Accepted Answer

Wavelength λ$$=6000$$ $$A0=6000$$×$$10$$−$$10$$ m Slit width $$a=0.002$$ $$mm=0.002$$×$$10$$−$$3$$ mAngle of diffraction θ$$=$$?    asinθ$$=n$$λ⇒$$sin$$θ$$=n$$λ$$a=1$$×$$6$$×$$10$$−$$72$$×$$10$$−$$6=0.3$$          ∴  θ$$=$$$$sin$$−$$1(0.3)$$

A parallel beam of monochromatic light of wavelength $6000 A^{0}$ is incident normally on a narrow slit of width of $0.002 m m$ . The light is focussed by a convex lens on a screen placed on a focal plane. The first minimum is formed for the angle of diffraction equal to

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A parallel beam of monochromatic light of wavelength 6000 A0 is incident normally on a narrow slit of width of 0.002 mm . The light is focussed by a convex lens on a screen placed on a focal plane. The first minimum is formed for the angle of diffraction equal to

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A parallel beam of monochromatic light of wavelength $6000 A^{0}$ is incident normally on a narrow slit of width of $0.002 m m$ . The light is focussed by a convex lens on a screen placed on a focal plane. The first minimum is formed for the angle of diffraction equal to