When an object is placed at a distance of `60 cm` from a convex spherical mirror, the magnification produced is `1//2`. Where should the object be placed to get a magnification of `1//3` ?

When an object is placed at a distance 60 cm from a convex spherical mirror, the magnification produced is 1//2 . Where should the object be placed to get a magnification of 1//3 ?

When an object is placed at a distance of 60 cm from a convex mirror, the magnification produced is 1/2. Where should the object be placed to obtain a magnification of 1/3?

When an object is placed at a distance of 25 cm from a mirror, the magnification is m_1 . The object is moved 15 cm further away with respect to the earlier position, and the magnification becomes m_2 . If m_1//m_2=4 , the focal length of the mirror is

When an object is placed at a distance of 25 cm from a mirror, the magnification is m_(1) . The object is moved 15cm farther away with respect to the earlier position, and the magnification becomes m_(2) . If m_(1)//m_(2)=4 , then calculate the focal length of the mirror.

When an object is placed at a distance of 25 cm from a mirror, the magnification is m_(1) . The object is moved 15cm farther away with respect to the earlier position, and the magnification becomes m_(2) . If m_(1)//m_(2)=4 , then calculate the focal length of the mirror.

When an object is placed at a distance of 25 cm from a mirror, the magnification is m_(1) . The object is moved 15cm farther away with respect to the earlier position, and the magnification becomes m_(2) . If m_(1)//m_(2)=4 , then calculate the focal length of the mirror.