367980 Two coherent light sources \({P}\) and \({Q}\) each of wavelength \({\lambda}\) are separated by a distance \({3 \lambda}\) as shown. The maximum number of minima formed on line \({A B}\) which runs from \({-\infty}\) to \({+\infty}\) is

367981 Assertion :
Thin film which appears bright in reflected system will appear dark in the transmitted light and vice versa.
Reason :
The conditions for film to appear bright or dark in reflected light are just reverse to those in the transmitted light.

367982 In a modified Young's double slit experiment, a monochromatic uniform and parallel beam of light of wavelength 6000 \( \mathop A^{~~\circ} \) and intensity \({\dfrac{10}{\pi} {W} / {m}^{2}}\) is incident normally on two circular aperture \({A}\) and \({B}\) of radii 0.001 \(m\) and 0.002 \(m\) respectively. A perfect transparent film of thickness 2000\( \mathop A^{~~\circ} \) and refractive index 1.5 for the wavelength of 6000\( \mathop A^{~~\circ} \) is placed in front of aperture \({A}\) as shown in figure.


Calculate the intensity of light (in \({\mu {W}}\) ) received at the focal point of the lens in watt. The lens is symmetrically placed with respect to the aperture. Assume that \({10 \%}\) of the power received by each aperture goes in the original direction and is brought to the focal point.

367983 In \(Y D S E\), the source placed symmetrically with respect to the slit is now moved parallel to the plane of the slits so that it is closer to the upper slit, as shown. Then,

367984 The focal length of a convex lens will be maximum for

367980 Two coherent light sources \({P}\) and \({Q}\) each of wavelength \({\lambda}\) are separated by a distance \({3 \lambda}\) as shown. The maximum number of minima formed on line \({A B}\) which runs from \({-\infty}\) to \({+\infty}\) is

367981 Assertion :
Thin film which appears bright in reflected system will appear dark in the transmitted light and vice versa.
Reason :
The conditions for film to appear bright or dark in reflected light are just reverse to those in the transmitted light.

367982 In a modified Young's double slit experiment, a monochromatic uniform and parallel beam of light of wavelength 6000 \( \mathop A^{~~\circ} \) and intensity \({\dfrac{10}{\pi} {W} / {m}^{2}}\) is incident normally on two circular aperture \({A}\) and \({B}\) of radii 0.001 \(m\) and 0.002 \(m\) respectively. A perfect transparent film of thickness 2000\( \mathop A^{~~\circ} \) and refractive index 1.5 for the wavelength of 6000\( \mathop A^{~~\circ} \) is placed in front of aperture \({A}\) as shown in figure.


Calculate the intensity of light (in \({\mu {W}}\) ) received at the focal point of the lens in watt. The lens is symmetrically placed with respect to the aperture. Assume that \({10 \%}\) of the power received by each aperture goes in the original direction and is brought to the focal point.

367983 In \(Y D S E\), the source placed symmetrically with respect to the slit is now moved parallel to the plane of the slits so that it is closer to the upper slit, as shown. Then,

367984 The focal length of a convex lens will be maximum for

367980 Two coherent light sources \({P}\) and \({Q}\) each of wavelength \({\lambda}\) are separated by a distance \({3 \lambda}\) as shown. The maximum number of minima formed on line \({A B}\) which runs from \({-\infty}\) to \({+\infty}\) is

367981 Assertion :
Thin film which appears bright in reflected system will appear dark in the transmitted light and vice versa.
Reason :
The conditions for film to appear bright or dark in reflected light are just reverse to those in the transmitted light.

367982 In a modified Young's double slit experiment, a monochromatic uniform and parallel beam of light of wavelength 6000 \( \mathop A^{~~\circ} \) and intensity \({\dfrac{10}{\pi} {W} / {m}^{2}}\) is incident normally on two circular aperture \({A}\) and \({B}\) of radii 0.001 \(m\) and 0.002 \(m\) respectively. A perfect transparent film of thickness 2000\( \mathop A^{~~\circ} \) and refractive index 1.5 for the wavelength of 6000\( \mathop A^{~~\circ} \) is placed in front of aperture \({A}\) as shown in figure.


Calculate the intensity of light (in \({\mu {W}}\) ) received at the focal point of the lens in watt. The lens is symmetrically placed with respect to the aperture. Assume that \({10 \%}\) of the power received by each aperture goes in the original direction and is brought to the focal point.

367983 In \(Y D S E\), the source placed symmetrically with respect to the slit is now moved parallel to the plane of the slits so that it is closer to the upper slit, as shown. Then,

367984 The focal length of a convex lens will be maximum for

367980 Two coherent light sources \({P}\) and \({Q}\) each of wavelength \({\lambda}\) are separated by a distance \({3 \lambda}\) as shown. The maximum number of minima formed on line \({A B}\) which runs from \({-\infty}\) to \({+\infty}\) is

367981 Assertion :
Thin film which appears bright in reflected system will appear dark in the transmitted light and vice versa.
Reason :
The conditions for film to appear bright or dark in reflected light are just reverse to those in the transmitted light.

367982 In a modified Young's double slit experiment, a monochromatic uniform and parallel beam of light of wavelength 6000 \( \mathop A^{~~\circ} \) and intensity \({\dfrac{10}{\pi} {W} / {m}^{2}}\) is incident normally on two circular aperture \({A}\) and \({B}\) of radii 0.001 \(m\) and 0.002 \(m\) respectively. A perfect transparent film of thickness 2000\( \mathop A^{~~\circ} \) and refractive index 1.5 for the wavelength of 6000\( \mathop A^{~~\circ} \) is placed in front of aperture \({A}\) as shown in figure.


Calculate the intensity of light (in \({\mu {W}}\) ) received at the focal point of the lens in watt. The lens is symmetrically placed with respect to the aperture. Assume that \({10 \%}\) of the power received by each aperture goes in the original direction and is brought to the focal point.

367983 In \(Y D S E\), the source placed symmetrically with respect to the slit is now moved parallel to the plane of the slits so that it is closer to the upper slit, as shown. Then,

367984 The focal length of a convex lens will be maximum for

367980 Two coherent light sources \({P}\) and \({Q}\) each of wavelength \({\lambda}\) are separated by a distance \({3 \lambda}\) as shown. The maximum number of minima formed on line \({A B}\) which runs from \({-\infty}\) to \({+\infty}\) is

367981 Assertion :
Thin film which appears bright in reflected system will appear dark in the transmitted light and vice versa.
Reason :
The conditions for film to appear bright or dark in reflected light are just reverse to those in the transmitted light.

367982 In a modified Young's double slit experiment, a monochromatic uniform and parallel beam of light of wavelength 6000 \( \mathop A^{~~\circ} \) and intensity \({\dfrac{10}{\pi} {W} / {m}^{2}}\) is incident normally on two circular aperture \({A}\) and \({B}\) of radii 0.001 \(m\) and 0.002 \(m\) respectively. A perfect transparent film of thickness 2000\( \mathop A^{~~\circ} \) and refractive index 1.5 for the wavelength of 6000\( \mathop A^{~~\circ} \) is placed in front of aperture \({A}\) as shown in figure.


Calculate the intensity of light (in \({\mu {W}}\) ) received at the focal point of the lens in watt. The lens is symmetrically placed with respect to the aperture. Assume that \({10 \%}\) of the power received by each aperture goes in the original direction and is brought to the focal point.

367983 In \(Y D S E\), the source placed symmetrically with respect to the slit is now moved parallel to the plane of the slits so that it is closer to the upper slit, as shown. Then,

367984 The focal length of a convex lens will be maximum for