Diffraction
PHXII10:WAVE OPTICS

367691 A microwave of wavelength \(2.0\,cm\) falls normally on a slit of width \(4.0\,cm.\) The angular spread of the central maxima of the diffraction pattern obtained on a screen \(1.5\,m\) away from the slit, will be

1 \(60^{\circ}\)
2 \(45^{\circ}\)
3 \(15^{\circ}\)
4 \(30^{\circ}\)
PHXII10:WAVE OPTICS

367692 A beam of light of \(\lambda = 600\;nm\) from a distant source falls on a single slit \(1\;mm\) wide and the resulting diffraction pattern is observed on a screen \(2\,m\) away. The distance between first dark fringes on either side of the central bright fringe is

1 \(1.2\,mm\)
2 \(1.2\,cm\)
3 \(2.4\,mm\)
4 \(2.4\,cm\)
PHXII10:WAVE OPTICS

367693 Light of wavelength \(\lambda \) is incident on a slit width \(d\). The resulting diffraction pattern is observed on a screen at a distance \(D\). The linear width of the principal maximum is equal to the width of the slit, if \(D\) equals

1 \(\frac{d}{\lambda }\)
2 \(\frac{{{d^2}}}{{2\lambda }}\)
3 \(\frac{{2\lambda }}{d}\)
4 \(\frac{{2{\lambda ^2}}}{d}\)
PHXII10:WAVE OPTICS

367694 A linear aperture whose width is \(0.02\,cm\) is placed immediately infront of a lens of focal length \(60\,cm\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times {10^{ - 5}}cm.\) The distance of the first dark band of the diffraction pattern from the centre of the screen is

1 \(0.10\;cm\)
2 \(0.25\;cm\)
3 \(0.20\;cm\)
4 \(0.15\;cm\)
PHXII10:WAVE OPTICS

367695 Light of wavelength \(\lambda \) is incident on a single slit of width a and the distance between slit and screen is \(D\). In diffraction pattern, if slit width is equal to the width of the central maximum then \(D\) is equal to

1 \(\frac{a}{{2\lambda }}\)
2 \(\frac{{{a^2}}}{{2\lambda }}\)
3 \(\frac{a}{\lambda }\)
4 \(\frac{{{a^2}}}{\lambda }\)
PHXII10:WAVE OPTICS

367691 A microwave of wavelength \(2.0\,cm\) falls normally on a slit of width \(4.0\,cm.\) The angular spread of the central maxima of the diffraction pattern obtained on a screen \(1.5\,m\) away from the slit, will be

1 \(60^{\circ}\)
2 \(45^{\circ}\)
3 \(15^{\circ}\)
4 \(30^{\circ}\)
PHXII10:WAVE OPTICS

367692 A beam of light of \(\lambda = 600\;nm\) from a distant source falls on a single slit \(1\;mm\) wide and the resulting diffraction pattern is observed on a screen \(2\,m\) away. The distance between first dark fringes on either side of the central bright fringe is

1 \(1.2\,mm\)
2 \(1.2\,cm\)
3 \(2.4\,mm\)
4 \(2.4\,cm\)
PHXII10:WAVE OPTICS

367693 Light of wavelength \(\lambda \) is incident on a slit width \(d\). The resulting diffraction pattern is observed on a screen at a distance \(D\). The linear width of the principal maximum is equal to the width of the slit, if \(D\) equals

1 \(\frac{d}{\lambda }\)
2 \(\frac{{{d^2}}}{{2\lambda }}\)
3 \(\frac{{2\lambda }}{d}\)
4 \(\frac{{2{\lambda ^2}}}{d}\)
PHXII10:WAVE OPTICS

367694 A linear aperture whose width is \(0.02\,cm\) is placed immediately infront of a lens of focal length \(60\,cm\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times {10^{ - 5}}cm.\) The distance of the first dark band of the diffraction pattern from the centre of the screen is

1 \(0.10\;cm\)
2 \(0.25\;cm\)
3 \(0.20\;cm\)
4 \(0.15\;cm\)
PHXII10:WAVE OPTICS

367695 Light of wavelength \(\lambda \) is incident on a single slit of width a and the distance between slit and screen is \(D\). In diffraction pattern, if slit width is equal to the width of the central maximum then \(D\) is equal to

1 \(\frac{a}{{2\lambda }}\)
2 \(\frac{{{a^2}}}{{2\lambda }}\)
3 \(\frac{a}{\lambda }\)
4 \(\frac{{{a^2}}}{\lambda }\)
PHXII10:WAVE OPTICS

367691 A microwave of wavelength \(2.0\,cm\) falls normally on a slit of width \(4.0\,cm.\) The angular spread of the central maxima of the diffraction pattern obtained on a screen \(1.5\,m\) away from the slit, will be

1 \(60^{\circ}\)
2 \(45^{\circ}\)
3 \(15^{\circ}\)
4 \(30^{\circ}\)
PHXII10:WAVE OPTICS

367692 A beam of light of \(\lambda = 600\;nm\) from a distant source falls on a single slit \(1\;mm\) wide and the resulting diffraction pattern is observed on a screen \(2\,m\) away. The distance between first dark fringes on either side of the central bright fringe is

1 \(1.2\,mm\)
2 \(1.2\,cm\)
3 \(2.4\,mm\)
4 \(2.4\,cm\)
PHXII10:WAVE OPTICS

367693 Light of wavelength \(\lambda \) is incident on a slit width \(d\). The resulting diffraction pattern is observed on a screen at a distance \(D\). The linear width of the principal maximum is equal to the width of the slit, if \(D\) equals

1 \(\frac{d}{\lambda }\)
2 \(\frac{{{d^2}}}{{2\lambda }}\)
3 \(\frac{{2\lambda }}{d}\)
4 \(\frac{{2{\lambda ^2}}}{d}\)
PHXII10:WAVE OPTICS

367694 A linear aperture whose width is \(0.02\,cm\) is placed immediately infront of a lens of focal length \(60\,cm\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times {10^{ - 5}}cm.\) The distance of the first dark band of the diffraction pattern from the centre of the screen is

1 \(0.10\;cm\)
2 \(0.25\;cm\)
3 \(0.20\;cm\)
4 \(0.15\;cm\)
PHXII10:WAVE OPTICS

367695 Light of wavelength \(\lambda \) is incident on a single slit of width a and the distance between slit and screen is \(D\). In diffraction pattern, if slit width is equal to the width of the central maximum then \(D\) is equal to

1 \(\frac{a}{{2\lambda }}\)
2 \(\frac{{{a^2}}}{{2\lambda }}\)
3 \(\frac{a}{\lambda }\)
4 \(\frac{{{a^2}}}{\lambda }\)
PHXII10:WAVE OPTICS

367691 A microwave of wavelength \(2.0\,cm\) falls normally on a slit of width \(4.0\,cm.\) The angular spread of the central maxima of the diffraction pattern obtained on a screen \(1.5\,m\) away from the slit, will be

1 \(60^{\circ}\)
2 \(45^{\circ}\)
3 \(15^{\circ}\)
4 \(30^{\circ}\)
PHXII10:WAVE OPTICS

367692 A beam of light of \(\lambda = 600\;nm\) from a distant source falls on a single slit \(1\;mm\) wide and the resulting diffraction pattern is observed on a screen \(2\,m\) away. The distance between first dark fringes on either side of the central bright fringe is

1 \(1.2\,mm\)
2 \(1.2\,cm\)
3 \(2.4\,mm\)
4 \(2.4\,cm\)
PHXII10:WAVE OPTICS

367693 Light of wavelength \(\lambda \) is incident on a slit width \(d\). The resulting diffraction pattern is observed on a screen at a distance \(D\). The linear width of the principal maximum is equal to the width of the slit, if \(D\) equals

1 \(\frac{d}{\lambda }\)
2 \(\frac{{{d^2}}}{{2\lambda }}\)
3 \(\frac{{2\lambda }}{d}\)
4 \(\frac{{2{\lambda ^2}}}{d}\)
PHXII10:WAVE OPTICS

367694 A linear aperture whose width is \(0.02\,cm\) is placed immediately infront of a lens of focal length \(60\,cm\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times {10^{ - 5}}cm.\) The distance of the first dark band of the diffraction pattern from the centre of the screen is

1 \(0.10\;cm\)
2 \(0.25\;cm\)
3 \(0.20\;cm\)
4 \(0.15\;cm\)
PHXII10:WAVE OPTICS

367695 Light of wavelength \(\lambda \) is incident on a single slit of width a and the distance between slit and screen is \(D\). In diffraction pattern, if slit width is equal to the width of the central maximum then \(D\) is equal to

1 \(\frac{a}{{2\lambda }}\)
2 \(\frac{{{a^2}}}{{2\lambda }}\)
3 \(\frac{a}{\lambda }\)
4 \(\frac{{{a^2}}}{\lambda }\)
PHXII10:WAVE OPTICS

367691 A microwave of wavelength \(2.0\,cm\) falls normally on a slit of width \(4.0\,cm.\) The angular spread of the central maxima of the diffraction pattern obtained on a screen \(1.5\,m\) away from the slit, will be

1 \(60^{\circ}\)
2 \(45^{\circ}\)
3 \(15^{\circ}\)
4 \(30^{\circ}\)
PHXII10:WAVE OPTICS

367692 A beam of light of \(\lambda = 600\;nm\) from a distant source falls on a single slit \(1\;mm\) wide and the resulting diffraction pattern is observed on a screen \(2\,m\) away. The distance between first dark fringes on either side of the central bright fringe is

1 \(1.2\,mm\)
2 \(1.2\,cm\)
3 \(2.4\,mm\)
4 \(2.4\,cm\)
PHXII10:WAVE OPTICS

367693 Light of wavelength \(\lambda \) is incident on a slit width \(d\). The resulting diffraction pattern is observed on a screen at a distance \(D\). The linear width of the principal maximum is equal to the width of the slit, if \(D\) equals

1 \(\frac{d}{\lambda }\)
2 \(\frac{{{d^2}}}{{2\lambda }}\)
3 \(\frac{{2\lambda }}{d}\)
4 \(\frac{{2{\lambda ^2}}}{d}\)
PHXII10:WAVE OPTICS

367694 A linear aperture whose width is \(0.02\,cm\) is placed immediately infront of a lens of focal length \(60\,cm\). The aperture is illuminated normally by a parallel beam of wavelength \(5 \times {10^{ - 5}}cm.\) The distance of the first dark band of the diffraction pattern from the centre of the screen is

1 \(0.10\;cm\)
2 \(0.25\;cm\)
3 \(0.20\;cm\)
4 \(0.15\;cm\)
PHXII10:WAVE OPTICS

367695 Light of wavelength \(\lambda \) is incident on a single slit of width a and the distance between slit and screen is \(D\). In diffraction pattern, if slit width is equal to the width of the central maximum then \(D\) is equal to

1 \(\frac{a}{{2\lambda }}\)
2 \(\frac{{{a^2}}}{{2\lambda }}\)
3 \(\frac{a}{\lambda }\)
4 \(\frac{{{a^2}}}{\lambda }\)