282915 Two luminous point sources separated by a certain distance are at \(10 \mathrm{~km}\) from an observer. If the aperture of his eye is \(2.5 \times 10^{-3} \mathrm{~m}\) and the wavelength of light used is \(500 \mathrm{~nm}\), the distance of separation between the point sources just seen to be resolved is

282916 In a telescope, the focal length of objective is 60 \(\mathrm{cm}\) and eye piece is \(10 \mathrm{~cm}\). When it is focused on an object parallel rays come out of eyepiece. If the angle subtended at objective by object is \(3^{\circ}\), then what is the angular width of image?

282917 Distance between objective and eye- piece of a microscope is \(20.6 \mathrm{~cm}\). Consider both lens are thin and focal length of each lens is \(6 \mathbf{~ m m}\). If last image is formed at infinity, then linear magnification of the objective is

282918 Magnifying power of an astronomical telescope will be maximum when the final image formed by it is

282915 Two luminous point sources separated by a certain distance are at \(10 \mathrm{~km}\) from an observer. If the aperture of his eye is \(2.5 \times 10^{-3} \mathrm{~m}\) and the wavelength of light used is \(500 \mathrm{~nm}\), the distance of separation between the point sources just seen to be resolved is

282916 In a telescope, the focal length of objective is 60 \(\mathrm{cm}\) and eye piece is \(10 \mathrm{~cm}\). When it is focused on an object parallel rays come out of eyepiece. If the angle subtended at objective by object is \(3^{\circ}\), then what is the angular width of image?

282917 Distance between objective and eye- piece of a microscope is \(20.6 \mathrm{~cm}\). Consider both lens are thin and focal length of each lens is \(6 \mathbf{~ m m}\). If last image is formed at infinity, then linear magnification of the objective is

282918 Magnifying power of an astronomical telescope will be maximum when the final image formed by it is

282915 Two luminous point sources separated by a certain distance are at \(10 \mathrm{~km}\) from an observer. If the aperture of his eye is \(2.5 \times 10^{-3} \mathrm{~m}\) and the wavelength of light used is \(500 \mathrm{~nm}\), the distance of separation between the point sources just seen to be resolved is

282916 In a telescope, the focal length of objective is 60 \(\mathrm{cm}\) and eye piece is \(10 \mathrm{~cm}\). When it is focused on an object parallel rays come out of eyepiece. If the angle subtended at objective by object is \(3^{\circ}\), then what is the angular width of image?

282917 Distance between objective and eye- piece of a microscope is \(20.6 \mathrm{~cm}\). Consider both lens are thin and focal length of each lens is \(6 \mathbf{~ m m}\). If last image is formed at infinity, then linear magnification of the objective is

282918 Magnifying power of an astronomical telescope will be maximum when the final image formed by it is

282915 Two luminous point sources separated by a certain distance are at \(10 \mathrm{~km}\) from an observer. If the aperture of his eye is \(2.5 \times 10^{-3} \mathrm{~m}\) and the wavelength of light used is \(500 \mathrm{~nm}\), the distance of separation between the point sources just seen to be resolved is

282916 In a telescope, the focal length of objective is 60 \(\mathrm{cm}\) and eye piece is \(10 \mathrm{~cm}\). When it is focused on an object parallel rays come out of eyepiece. If the angle subtended at objective by object is \(3^{\circ}\), then what is the angular width of image?

282917 Distance between objective and eye- piece of a microscope is \(20.6 \mathrm{~cm}\). Consider both lens are thin and focal length of each lens is \(6 \mathbf{~ m m}\). If last image is formed at infinity, then linear magnification of the objective is

282918 Magnifying power of an astronomical telescope will be maximum when the final image formed by it is