(a) Obtain the condition for even orders of interference maxima missing in the diffraction pattern due to double slits. Consider the case of Fraunhofer diffraction at double slits where slit width b 7.5 x 6.5 x 10-2 cm and wavelength = 5.890 × 10-5 cm. How many interference minima will occur between the two diffraction minima on either side of 10-3 cm, slit separation d the central maximum?

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(a) Obtain the condition for even orders of interference maxima missing in the diffraction
pattern due to double slits.
Consider the case of Fraunhofer diffraction at double slits where slit width b
7.5 ×
10-3 cm, slit separation d =
many interference minima will occur between the two diffraction minima on either side of
the central maximum?
6.5 x 10-2 cm and wavelength A = 5.890 × 10-5 cm. How
(b) What will be the angular separation of D1 and D2 lines of sodium in the second order
spectra due to diffraction grating with 15000 lines per inch? Given that Api = 5.890 ×
10-5 cm andp2 = 5.896 × 10-5 cm.
Transcribed Image Text:(a) Obtain the condition for even orders of interference maxima missing in the diffraction pattern due to double slits. Consider the case of Fraunhofer diffraction at double slits where slit width b 7.5 × 10-3 cm, slit separation d = many interference minima will occur between the two diffraction minima on either side of the central maximum? 6.5 x 10-2 cm and wavelength A = 5.890 × 10-5 cm. How (b) What will be the angular separation of D1 and D2 lines of sodium in the second order spectra due to diffraction grating with 15000 lines per inch? Given that Api = 5.890 × 10-5 cm andp2 = 5.896 × 10-5 cm.
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