282417 A thin converging lens of focal length \(25 \mathrm{~cm}\) forms a sharp image of an object on a screen placed at a distance of \(75 \mathrm{~cm}\) from the lens. Later the screen is moved closer to the lens by a distance \(25 \mathrm{~m}\). The distance through which the object is to be shifted so that its image on the screen is sharp again is

282418 A person cannot see objects clearly beyond 2.0 m. The power of lens required to correct his vision will be

282419 A double convex lens has two surfaces of equal radii \(R\) and refractive index \(\mu=1.5\). Then,

282420 A point object \(O\) is placed in front of a glass rod having spherical end of radius of curvature \(30 \mathrm{~cm}\). The image would be formed at

282417 A thin converging lens of focal length \(25 \mathrm{~cm}\) forms a sharp image of an object on a screen placed at a distance of \(75 \mathrm{~cm}\) from the lens. Later the screen is moved closer to the lens by a distance \(25 \mathrm{~m}\). The distance through which the object is to be shifted so that its image on the screen is sharp again is

282418 A person cannot see objects clearly beyond 2.0 m. The power of lens required to correct his vision will be

282419 A double convex lens has two surfaces of equal radii \(R\) and refractive index \(\mu=1.5\). Then,

282420 A point object \(O\) is placed in front of a glass rod having spherical end of radius of curvature \(30 \mathrm{~cm}\). The image would be formed at

282417 A thin converging lens of focal length \(25 \mathrm{~cm}\) forms a sharp image of an object on a screen placed at a distance of \(75 \mathrm{~cm}\) from the lens. Later the screen is moved closer to the lens by a distance \(25 \mathrm{~m}\). The distance through which the object is to be shifted so that its image on the screen is sharp again is

282418 A person cannot see objects clearly beyond 2.0 m. The power of lens required to correct his vision will be

282419 A double convex lens has two surfaces of equal radii \(R\) and refractive index \(\mu=1.5\). Then,

282420 A point object \(O\) is placed in front of a glass rod having spherical end of radius of curvature \(30 \mathrm{~cm}\). The image would be formed at

282417 A thin converging lens of focal length \(25 \mathrm{~cm}\) forms a sharp image of an object on a screen placed at a distance of \(75 \mathrm{~cm}\) from the lens. Later the screen is moved closer to the lens by a distance \(25 \mathrm{~m}\). The distance through which the object is to be shifted so that its image on the screen is sharp again is

282418 A person cannot see objects clearly beyond 2.0 m. The power of lens required to correct his vision will be

282419 A double convex lens has two surfaces of equal radii \(R\) and refractive index \(\mu=1.5\). Then,

282420 A point object \(O\) is placed in front of a glass rod having spherical end of radius of curvature \(30 \mathrm{~cm}\). The image would be formed at