A telescope with magnification M = 15 was submerged in water so that the inside of the telescope is filled up with water. To make the system work as a telescope within the former dimensions, the objective was removed. What was the magnification of the telescope after the change? `mu` of the material of the eye-piece=`1.5` and `mu` of water `=(4)/(3)`

A telescope with magnification M = 15 was submerged in water so that t

1.	A telescope with magnification M = 15 was submerged in water so that the inside of the telescope is filled up with water. To make the system work as a telescope within the former dimensions, the objective was removed. What was the magnification of the telescope after the change? `mu` of the material of the eye-piece=`1.5` and `mu` of water `=(4)/(3)`
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