283548 A linear aperture whose width is \(0.02 \mathrm{~cm}\) is placed immediately in front of a lens of a lens of focal length \(60 \mathrm{~cm}\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times 10^{-5} \mathrm{~cm}\). The distance of the first dark band of the diffraction pattern from the centre of the screen is

283549 For a parallel beam of monochromatic light of wavelength \(\lambda^{\prime}\) diffraction is produced by a single slit whose width ' \(a\) ' is of the order of the wavelength of the light. If ' \(D\) ' is the distance of the screen from the slit, the width of the central maxima will be

283550 In a single slit diffraction experiment the first minimum for red light of wavelength \(6600 \AA\) coincides with the first maximum for other light of wavelength \(\lambda\), The value of \(\lambda\) is

283551 A plane wave of wavelength \(6250 \AA\) is incident normally on a slit of width \(2 \times 10^{-2} \mathrm{~cm}\). The width of the principal maximum of diffraction pattern on a screen at a distance of \(50 \mathrm{~cm}\) will be.

283557 Angular width of central maximum in the Fraunhoffer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength \(6000 \AA\). When the slit is illuminated by light of another wavelength, then the angular width decreases by \(30 \%\). The same decrease in angular width of central maximum is obtained when the original apparatus is immersed in a liquid. The refractive index of the liquid will be

283548 A linear aperture whose width is \(0.02 \mathrm{~cm}\) is placed immediately in front of a lens of a lens of focal length \(60 \mathrm{~cm}\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times 10^{-5} \mathrm{~cm}\). The distance of the first dark band of the diffraction pattern from the centre of the screen is

283549 For a parallel beam of monochromatic light of wavelength \(\lambda^{\prime}\) diffraction is produced by a single slit whose width ' \(a\) ' is of the order of the wavelength of the light. If ' \(D\) ' is the distance of the screen from the slit, the width of the central maxima will be

283550 In a single slit diffraction experiment the first minimum for red light of wavelength \(6600 \AA\) coincides with the first maximum for other light of wavelength \(\lambda\), The value of \(\lambda\) is

283551 A plane wave of wavelength \(6250 \AA\) is incident normally on a slit of width \(2 \times 10^{-2} \mathrm{~cm}\). The width of the principal maximum of diffraction pattern on a screen at a distance of \(50 \mathrm{~cm}\) will be.

283557 Angular width of central maximum in the Fraunhoffer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength \(6000 \AA\). When the slit is illuminated by light of another wavelength, then the angular width decreases by \(30 \%\). The same decrease in angular width of central maximum is obtained when the original apparatus is immersed in a liquid. The refractive index of the liquid will be

283548 A linear aperture whose width is \(0.02 \mathrm{~cm}\) is placed immediately in front of a lens of a lens of focal length \(60 \mathrm{~cm}\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times 10^{-5} \mathrm{~cm}\). The distance of the first dark band of the diffraction pattern from the centre of the screen is

283549 For a parallel beam of monochromatic light of wavelength \(\lambda^{\prime}\) diffraction is produced by a single slit whose width ' \(a\) ' is of the order of the wavelength of the light. If ' \(D\) ' is the distance of the screen from the slit, the width of the central maxima will be

283550 In a single slit diffraction experiment the first minimum for red light of wavelength \(6600 \AA\) coincides with the first maximum for other light of wavelength \(\lambda\), The value of \(\lambda\) is

283551 A plane wave of wavelength \(6250 \AA\) is incident normally on a slit of width \(2 \times 10^{-2} \mathrm{~cm}\). The width of the principal maximum of diffraction pattern on a screen at a distance of \(50 \mathrm{~cm}\) will be.

283557 Angular width of central maximum in the Fraunhoffer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength \(6000 \AA\). When the slit is illuminated by light of another wavelength, then the angular width decreases by \(30 \%\). The same decrease in angular width of central maximum is obtained when the original apparatus is immersed in a liquid. The refractive index of the liquid will be

283548 A linear aperture whose width is \(0.02 \mathrm{~cm}\) is placed immediately in front of a lens of a lens of focal length \(60 \mathrm{~cm}\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times 10^{-5} \mathrm{~cm}\). The distance of the first dark band of the diffraction pattern from the centre of the screen is

283549 For a parallel beam of monochromatic light of wavelength \(\lambda^{\prime}\) diffraction is produced by a single slit whose width ' \(a\) ' is of the order of the wavelength of the light. If ' \(D\) ' is the distance of the screen from the slit, the width of the central maxima will be

283550 In a single slit diffraction experiment the first minimum for red light of wavelength \(6600 \AA\) coincides with the first maximum for other light of wavelength \(\lambda\), The value of \(\lambda\) is

283551 A plane wave of wavelength \(6250 \AA\) is incident normally on a slit of width \(2 \times 10^{-2} \mathrm{~cm}\). The width of the principal maximum of diffraction pattern on a screen at a distance of \(50 \mathrm{~cm}\) will be.

283557 Angular width of central maximum in the Fraunhoffer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength \(6000 \AA\). When the slit is illuminated by light of another wavelength, then the angular width decreases by \(30 \%\). The same decrease in angular width of central maximum is obtained when the original apparatus is immersed in a liquid. The refractive index of the liquid will be

283548 A linear aperture whose width is \(0.02 \mathrm{~cm}\) is placed immediately in front of a lens of a lens of focal length \(60 \mathrm{~cm}\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times 10^{-5} \mathrm{~cm}\). The distance of the first dark band of the diffraction pattern from the centre of the screen is

283549 For a parallel beam of monochromatic light of wavelength \(\lambda^{\prime}\) diffraction is produced by a single slit whose width ' \(a\) ' is of the order of the wavelength of the light. If ' \(D\) ' is the distance of the screen from the slit, the width of the central maxima will be

283550 In a single slit diffraction experiment the first minimum for red light of wavelength \(6600 \AA\) coincides with the first maximum for other light of wavelength \(\lambda\), The value of \(\lambda\) is

283551 A plane wave of wavelength \(6250 \AA\) is incident normally on a slit of width \(2 \times 10^{-2} \mathrm{~cm}\). The width of the principal maximum of diffraction pattern on a screen at a distance of \(50 \mathrm{~cm}\) will be.

283557 Angular width of central maximum in the Fraunhoffer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength \(6000 \AA\). When the slit is illuminated by light of another wavelength, then the angular width decreases by \(30 \%\). The same decrease in angular width of central maximum is obtained when the original apparatus is immersed in a liquid. The refractive index of the liquid will be