If the space between the lenses in the l...

If the space between the lenses in the lens combination shown were filled with water, what should happen to the focal length and power of the lens combination ?

Focal length `=` Decreased, Power`=`increased

Focal length `=` Decreased, Power`=` unchanged

Focal length `=` Increased, Power `=`unchnaged

Focal length `=` Increased, Power`=` decreased

Text Solution

Verified by Experts

The correct Answer is:

`P=(mu-1)((1)/(R_(1))-(1)/(R_(2)))`
`mu` decreaes, `P` decrease. `f` increases.

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