Properties of Converging Lens in Different Media

Introduction:
A converging lens is a type of lens that brings parallel rays of light together to a single point, called the focal point. The properties of a converging lens depend on the refractive index of the surrounding medium.

Assertion: Properties of converging lens do not remain the same in all media.

Reason: The property of the lens, whether the ray is diverging or converging, is independent of the surrounding medium.

Explanation:
The properties of a converging lens, such as its focal length, magnification, and image formation, are affected by the refractive index of the surrounding medium. When light passes through a lens, it gets refracted, and its path changes. The amount of refraction depends on the refractive index of the lens material and the surrounding medium.

When a converging lens is placed in a medium with a higher refractive index, the focal length of the lens decreases. This is because the lens bends light more, causing the rays to converge at a shorter distance. Similarly, when a converging lens is placed in a medium with a lower refractive index, the focal length increases.

However, the property of the lens, whether it converges or diverges light, is independent of the surrounding medium. A converging lens always converges light, regardless of the medium it is placed in. Similarly, a diverging lens always diverges light, regardless of the medium.

Conclusion:
In conclusion, the properties of a converging lens depend on the refractive index of the surrounding medium. However, the property of the lens, whether it converges or diverges light, is independent of the medium.

Both are true and R is the correct explaination of A