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A hollow lens is made of thin glass and ...

A hollow lens is made of thin glass and in the shape of a double concave lens. It can be filled with air, water of refractive index `1.33` or `CS_(2)` of refractive index `1.6`. It will act as a diverging lens if it is

A

filled with air and immersed in water.

B

filled with water and immersed in`CS_(2)`.

C

filled with air and immersed in `CS_(2)`.

D

filled with `CS_(2)` and immersed in water.

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • A double convex lens of refractive index m_(1) is immersed in a liquid of refractive index m_(2) . This lens will act as:

    A
    diverging lens If `m_(1) gt m_(2)`
    B
    diverging lens if `m_(1) lt m_(2)`
    C
    converging lens if `m_(1) = m_(2)`
    D
    converging lens if `m_(1) lt m_(2)`

  • A thin lens is made of glass of refractive index 1.6. Both the surfaces of lens are convex. When this lens is dipped in water of refractive index 4//3 then the lens will behave like

    A
    A rectangular slab of refractive index 1.2 kept in air
    B
    A prism of refractive index 1.2 kept in air
    C
    Convergent lens
    D
    Divergent lens

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    A biconcave lens made of a transparent material of refractive index 1.5 is immersed in water of refractive index 1.33. Will the lens behave as a converging or a diverging lens? Give reason.

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    " I length of convex lens in air is "10cm" .Its focal length in water is (refractive index of glass "=3/2" ,refractive index of water "

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