How focal length of a convex lens changes when it is completely immersed in the liquid?

What happens to focal length of a convex lens when it is immersed in water? ∴fw>fa, i.e., focal length of lens will increase.

How does the focal length of a lens change when it is immersed in water?

Now since the focal length is inversely proportional to the (μ−1), therefore the focal length will increase. Hence the focal length of the lens increases when it is immersed in the water.

What happens to the focal length of a convex lens when dipped in a liquid of higher refractive index?

Thus, the focal length of the lens will increase. When any lens or glass slab is immersed in a liquid whose refractive index is equal to that of lens, refractive index of lens will be equal to 1 relative to that liquid. The focal length of the lens in this case, will tend to infinity.

What happens to the focal length of the convex lens when it is cut horizontally?

Answer: If a convex lens is cut horizontally then radii of curvature on both sides of the lens i.e., R1 and R2 will remain same as before. As R1 and R2 do not change, so there will be no change in focal length of the lens.

What changes occur in the focal length of the convex lens and concave lens when immersed in water?

In case of spherical mirrors (both concave and convex), there will be no change in the focal length of the mirrors when immersed in water. This is because the focal length of mirrors does not depend on the external medium in which it is held.

Is focal length of convex lens is always equal to half of radius of curvature?

So, in general focal length is not half of the radius of curvature. So the above statement is false. (Note that the above statement is always true for spherical mirrors but not for spherical lenses)

How does a concave lens behave when immersed in a liquid having refractive index greater than the material of the lens?

Concave lens is immersed in medium having refractive index greater than the refractive index of the material of the lens therefore it will be have such converging lens . The lens behaves as convex.

How does the focal length of a convex lens change if monochromatic?

How does the focal length of a convex lens change if monochromatic red light is used instead of blue light? Refractive index of red light is less than the refractive index of blue light. So, the focal length of the lens will increase when red light is used.

What happens to the focal length of the convex lens when it is cut vertically?

When the lens is cut horizontally then the focal length of the lens but when the lens is cut vertically then the focal length of the lens changes. As the lens is cut vertically the half of the lens is cut away, therefore ${R_2} = 0$.

What is the focal length of a convex lens when immersed?

The focal length of a convex lens of refractive index 1.5 is f when it is places in air. When it is immersed in a liquid it behaves as a converging lens its focal length becomes xf (x> 1). The refractive index of the liquid

What is the difference between refractive index and focal length?

Refractive index describes a glass element’s ability to bend particular wavelengths of light. Focal length describes the distance between the film or pixel plane and the lens’ nodal or center point, the point at which light rays converge and spread again.

What is the refractive index of thin lenses?

A thin lens, surrounded by air, has no explicit connection to a refractive index (it’s so thin it has no glass inside). In order to work with those you assign a specific focal power/length to the thin lens. Often they are used in order to simulate a real/thick lens, then the power of that lens is calculated by the formulas above.

How do you know if a lens is concave or convex?

Where is the refractive index of the lens, and is the refractive index of the medium. If , then . So, the focal length of a convex lens will become negative, and it will act like a concave lens, and focal lens of a concave lens will become positive, so it’ll act as a convex lens.