Ray Optics Nature of Lens when immersed in Liquid fo IIT-JEE and NEET Physics is the topic of the video lesson. The focal length of the lens depends on the refractive index of lens materiel with respect to the surrounding medium. Thus when ever the medium changes, its focal length gets effected. If lens is immersed in a medium of refractive index higher than the lens materiel, its nature gets reversed and its magnitude also get changed. If the liquid has refractive index less than that of the lens materiel, nature of lens remains same but its focal length magnitude gets effected. It is shown in the video in detail with the proofs.
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