A lens of glass disappears when put inside a liquid. Why?
Answers
Explanation:
A lens placed in a transparent liquid becomes invisible because when refractive index of the material of the lens is equal to the refractive index of the liquid in which lens is placed under this condition no bending of light takes place when it travels from liquid to the lens, so both will start behaving like both are ...
If you submerge regular glass in vegetable oil, the light is refracted between the oil and the glass surface, allowing you to see the glass through the oil. ... The Pyrex® glass has the same angle of refraction as the vegetable oil, so the light bends at the same angle. As a result, the Pyrex® glass seems invisible.
If you immerse common glass lens in water, the relative refraction index decreases and the lens loses some of its optical power (its focal length increases). If the refraction index of the liquid was the same as of the lens material, the lens would really completely disappear.
but still some part is visible.
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