282415 An object is placed \(0.1 \mathrm{~m}\) in front of convex lens of focal length \(20 \mathrm{~cm}\) made of a material of refractive index 1.5 . The surface of the lens away from the object is silvered. If the radius of curvature of the silvered surface is \(22 \mathrm{~cm}\), then the distance of the final image form the silvered surface is

282439 An object approaches a convergent lens from the left of the lens with a uniform speed \(10 \mathrm{~m} / \mathrm{s}\) and stops at the focus. The image moves

282430 Two objects \(P\) and \(Q\) are placed at \(10 \mathrm{~cm}\) and \(30 \mathrm{~cm}\) infront of a convex lens of focal length 20 \(\mathrm{cm}\). The correct option for the image of \(P\) and \(Q\) is

282416 The focal length of a spherical mirror made of steel is \(150 \mathrm{~cm}\). If the temperature of the mirror increases by \(200 \mathrm{~K}\), its focal length become (coefficient of linear expansion of steel \(\alpha=12 \times\) \(\left.10^{-6}{ }^{\circ} \mathrm{C}^{-1}\right)\).

282415 An object is placed \(0.1 \mathrm{~m}\) in front of convex lens of focal length \(20 \mathrm{~cm}\) made of a material of refractive index 1.5 . The surface of the lens away from the object is silvered. If the radius of curvature of the silvered surface is \(22 \mathrm{~cm}\), then the distance of the final image form the silvered surface is

282439 An object approaches a convergent lens from the left of the lens with a uniform speed \(10 \mathrm{~m} / \mathrm{s}\) and stops at the focus. The image moves

282430 Two objects \(P\) and \(Q\) are placed at \(10 \mathrm{~cm}\) and \(30 \mathrm{~cm}\) infront of a convex lens of focal length 20 \(\mathrm{cm}\). The correct option for the image of \(P\) and \(Q\) is

282416 The focal length of a spherical mirror made of steel is \(150 \mathrm{~cm}\). If the temperature of the mirror increases by \(200 \mathrm{~K}\), its focal length become (coefficient of linear expansion of steel \(\alpha=12 \times\) \(\left.10^{-6}{ }^{\circ} \mathrm{C}^{-1}\right)\).

282415 An object is placed \(0.1 \mathrm{~m}\) in front of convex lens of focal length \(20 \mathrm{~cm}\) made of a material of refractive index 1.5 . The surface of the lens away from the object is silvered. If the radius of curvature of the silvered surface is \(22 \mathrm{~cm}\), then the distance of the final image form the silvered surface is

282439 An object approaches a convergent lens from the left of the lens with a uniform speed \(10 \mathrm{~m} / \mathrm{s}\) and stops at the focus. The image moves

282430 Two objects \(P\) and \(Q\) are placed at \(10 \mathrm{~cm}\) and \(30 \mathrm{~cm}\) infront of a convex lens of focal length 20 \(\mathrm{cm}\). The correct option for the image of \(P\) and \(Q\) is

282416 The focal length of a spherical mirror made of steel is \(150 \mathrm{~cm}\). If the temperature of the mirror increases by \(200 \mathrm{~K}\), its focal length become (coefficient of linear expansion of steel \(\alpha=12 \times\) \(\left.10^{-6}{ }^{\circ} \mathrm{C}^{-1}\right)\).

282415 An object is placed \(0.1 \mathrm{~m}\) in front of convex lens of focal length \(20 \mathrm{~cm}\) made of a material of refractive index 1.5 . The surface of the lens away from the object is silvered. If the radius of curvature of the silvered surface is \(22 \mathrm{~cm}\), then the distance of the final image form the silvered surface is

282439 An object approaches a convergent lens from the left of the lens with a uniform speed \(10 \mathrm{~m} / \mathrm{s}\) and stops at the focus. The image moves

282430 Two objects \(P\) and \(Q\) are placed at \(10 \mathrm{~cm}\) and \(30 \mathrm{~cm}\) infront of a convex lens of focal length 20 \(\mathrm{cm}\). The correct option for the image of \(P\) and \(Q\) is

282416 The focal length of a spherical mirror made of steel is \(150 \mathrm{~cm}\). If the temperature of the mirror increases by \(200 \mathrm{~K}\), its focal length become (coefficient of linear expansion of steel \(\alpha=12 \times\) \(\left.10^{-6}{ }^{\circ} \mathrm{C}^{-1}\right)\).