A TRANSPARENT SPHERE OF RADIUS R AND REFRACTIVE INDEX IS KEPT IN AIR AT WHAT DISTANCE FROM THE SURFACE - Chemistry - Haloalkanes and Haloarenes

Question

A TRANSPARENT SPHERE OF RADIUS R AND REFRACTIVE INDEX IS KEPT IN
AIR AT WHAT DISTANCE FROM THE SURFACE OF THE SPHERE SHOULD A POINT
OBJECT BE PLACED SO AS TO FORM A REAL IMAGE AT THE SAME DISTANCE
FROM THE SPHERE ?
A) R/U
B) UR
C)R/(U-1)
D) R/(U+1)

Zafar · Accepted Answer

OPTION C IS CORRECT

A TRANSPARENT SPHERE OF RADIUS R AND REFRACTIVE INDEX IS KEPT IN AIR. AT WHAT DISTANCE FROM THE SURFACE OF THE SPHERE SHOULD A POINT OBJECT BE PLACED SO AS TO FORM A REAL IMAGE AT THE SAME DISTANCE FROM THE SPHERE ?A) R/U B) URC)R/(U-1)D) R/(U+1)

A TRANSPARENT SPHERE OF RADIUS R AND REFRACTIVE INDEX IS KEPT IN AIR. AT WHAT DISTANCE FROM THE SURFACE OF THE SPHERE SHOULD A POINT OBJECT BE PLACED SO AS TO FORM A REAL IMAGE AT THE SAME DISTANCE FROM THE SPHERE ?
A) R/U
B) UR
C)R/(U-1)
D) R/(U+1)