The formation of a real image using a biconve | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) According to the lens maker's formula,the focal length $f$ of a lens in a medium is given by $\frac{1}{f} = (\mu_{rel} - 1) (\frac{1}{R_1} - \frac

Vedclass · Accepted Answer

Image disappears

Vedclass · Answer

(A) According to the lens maker's formula,the focal length $f$ of a lens in a medium is given by $\frac{1}{f} = (\mu_{rel} - 1) (\frac{1}{R_1} - \frac{1}{R_2})$,where $\mu_{rel} = \frac{\mu_{lens}}{\mu_{medium}}$.When the lens is immersed in water,the refractive index of the surrounding medium increases from $\mu_{air} \approx 1$ to $\mu_{water} \approx 1.33$. Consequently,the relative refractive index $\mu_{rel}$ decreases,which causes the focal length $f$ of the lens to increase.Since the focal length increases,the image position shifts away from the lens. Because the positions of the object and the screen are fixed,the image will no longer be formed on the screen. Therefore,the image will disappear from the screen.

The formation of a real image using a biconvex lens is shown below:
If the whole setup is immersed in water without disturbing the object and the screen positions,what will one observe on the screen?

Similar Questions

The sun's diameter is $1.4 \times 10^9 \ m$ and its distance from the earth is $10^{11} \ m$. The diameter of its image,formed by a convex lens of focal length $2 \ m$,will be.......$cm$.

$A$ convex lens of focal length $25 \ cm$ and made of glass with refractive index $1.5$ is immersed in water. The absolute change in focal length of the glass is [Use refractive index of water = $\frac{4}{3}$] (in $cm$)

When monochromatic red light is used instead of blue light in a convex lens, its focal length will

$A$ plano-convex lens is made of refractive index $1.6$. The radius of curvature of the curved surface is $60 \ cm$. The focal length of the lens is $..... \ cm$.

$A$ thin convex lens of refractive index $1.5$ has a focal length of $15\, cm$ in air. When the lens is placed in a liquid of refractive index $4/3$,its focal length will be......$cm$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

The formation of a real image using a biconvex lens is shown below:If the whole setup is immersed in water without disturbing the object and the screen positions,what will one observe on the screen?