Question

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material

• A. Equal to unity
• B. Equal to $1.33$
• C. Between unity and $1.33$
• D. Greater than $1.33$

Answer 1

The correct option is C Between unity and $1.33$

As we know,

${\mu }_{air}<{\mu }_{lens}<{\mu }_{water}i.e.,1<{\mu }_{lens}<1.33$