Reflection of light by spherical surface
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364736 If in the following figure, height of object \(O=\) \( + 2.5\;cm\), find the height of image \(I\) formed is:
supporting img

1 \( - 5\;cm\)
2 \( + 5\;cm\)
3 \( - 7.5\;cm\)
4 \( + 7.5\;cm\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364737 A person of 6 feet in length can see his full size erect image in a mirror 2 feet in height. This mirror has to be

1 Plane or concave
2 Plane or convex
3 Necessary concave
4 Necessarily convex
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364738 Position of an object which may be kept in front of a concave mirror of focal length \(15\,cm\) in order to give real three times magnified image is

1 \(20\,cm\)
2 \(10\,cm\)
3 \(15\,cm\)
4 none
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364739 Two objects \({A}\) and \({B}\) when placed in turn infront of a concave mirror of focal length \(7.5\,cm\), give image of equal size. If \({A}\) is three times the size of \({B}\) and is placed \(30\,cm\) from the mirror, what is the distance of \({B}\) from the mirror

1 \(-13\,cm\)
2 \(-15\,cm\)
3 \(-45\,cm\)
4 \(-7.5\,cm\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364736 If in the following figure, height of object \(O=\) \( + 2.5\;cm\), find the height of image \(I\) formed is:
supporting img

1 \( - 5\;cm\)
2 \( + 5\;cm\)
3 \( - 7.5\;cm\)
4 \( + 7.5\;cm\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364737 A person of 6 feet in length can see his full size erect image in a mirror 2 feet in height. This mirror has to be

1 Plane or concave
2 Plane or convex
3 Necessary concave
4 Necessarily convex
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364738 Position of an object which may be kept in front of a concave mirror of focal length \(15\,cm\) in order to give real three times magnified image is

1 \(20\,cm\)
2 \(10\,cm\)
3 \(15\,cm\)
4 none
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364739 Two objects \({A}\) and \({B}\) when placed in turn infront of a concave mirror of focal length \(7.5\,cm\), give image of equal size. If \({A}\) is three times the size of \({B}\) and is placed \(30\,cm\) from the mirror, what is the distance of \({B}\) from the mirror

1 \(-13\,cm\)
2 \(-15\,cm\)
3 \(-45\,cm\)
4 \(-7.5\,cm\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364736 If in the following figure, height of object \(O=\) \( + 2.5\;cm\), find the height of image \(I\) formed is:
supporting img

1 \( - 5\;cm\)
2 \( + 5\;cm\)
3 \( - 7.5\;cm\)
4 \( + 7.5\;cm\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364737 A person of 6 feet in length can see his full size erect image in a mirror 2 feet in height. This mirror has to be

1 Plane or concave
2 Plane or convex
3 Necessary concave
4 Necessarily convex
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364738 Position of an object which may be kept in front of a concave mirror of focal length \(15\,cm\) in order to give real three times magnified image is

1 \(20\,cm\)
2 \(10\,cm\)
3 \(15\,cm\)
4 none
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364739 Two objects \({A}\) and \({B}\) when placed in turn infront of a concave mirror of focal length \(7.5\,cm\), give image of equal size. If \({A}\) is three times the size of \({B}\) and is placed \(30\,cm\) from the mirror, what is the distance of \({B}\) from the mirror

1 \(-13\,cm\)
2 \(-15\,cm\)
3 \(-45\,cm\)
4 \(-7.5\,cm\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364736 If in the following figure, height of object \(O=\) \( + 2.5\;cm\), find the height of image \(I\) formed is:
supporting img

1 \( - 5\;cm\)
2 \( + 5\;cm\)
3 \( - 7.5\;cm\)
4 \( + 7.5\;cm\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364737 A person of 6 feet in length can see his full size erect image in a mirror 2 feet in height. This mirror has to be

1 Plane or concave
2 Plane or convex
3 Necessary concave
4 Necessarily convex
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364738 Position of an object which may be kept in front of a concave mirror of focal length \(15\,cm\) in order to give real three times magnified image is

1 \(20\,cm\)
2 \(10\,cm\)
3 \(15\,cm\)
4 none
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364739 Two objects \({A}\) and \({B}\) when placed in turn infront of a concave mirror of focal length \(7.5\,cm\), give image of equal size. If \({A}\) is three times the size of \({B}\) and is placed \(30\,cm\) from the mirror, what is the distance of \({B}\) from the mirror

1 \(-13\,cm\)
2 \(-15\,cm\)
3 \(-45\,cm\)
4 \(-7.5\,cm\)