What is behavior of convex lens in denser medium?
Refraction Rule for a Converging Lens
As the light rays enter into the more dense lens material, they refract towards the normal; and as they exit into the less dense air, they refract away from the normal. These specific rays will exit the lens traveling parallel to the principal axis.
How does a convex lens behave when it is placed in a medium with greater refractive index than that of the lens?
if n decreases, f increases. So if you immerse the convex lens in a liquid whose refractive index is greater than refractive index of material of lens then it will change its nature and become concave lens and thus it will start diverging the rays rather than focusing them on a single point.
What is the power of lens of focal length 10cm?
Answer: Convex lens have the ability to converge a parallel beam of light into a point. This point is called the focal point of the convex lens and the distance from the optical centre to the focal point is called the focal length. p = 10 D.
Under what condition does a Biconvex lens of glass having a certain refractive index Act?
A biconvex lens will act like a plane sheet of glass if it is immersed in a liquid having the same index of refraction as itself. In this case, the focal length 1/f = 0 or f →∞.
How does the power of the lens vary if the incident red light is replaced by violet light?
How does the power of a convex lens vary, if the incident red light replaced by violet light? Refractive index of violet light is greater than refractive index of red light. Therefore, power of the lens will be increased when red light is replaced by violet light.
Can a normal convex lens?
Yes, If a lens is kept in a medium whose refractive index is more than that of the material of the lens, the normal convex lens starts behaving like a concave lens and vice-versa.
What is a refractive index?
The refractive index is the measure of bending of a light ray when passing from one medium to another. It can also be defined as the ratio of the velocity of a light ray in an empty space to the velocity of light in a substance, n = c/v.
Is a convex lens?
A convex lens is also known as a converging lens. A converging lens is a lens that converges rays of light that are traveling parallel to its principal axis. They can be identified by their shape which is relatively thick across the middle and thin at the upper and lower edges.
How does convex lens behave in liquid?
A convex lens will act as converging when it is immersed in a liquid which has a lesser refractive index than the lens and act as diverging when the surrounding medium has a greater refractive index than it.
What is the refractive index for air?
Some representative refractive indices
|Name of Material||λ (nm)||refractive index no. n|
Can convex lens give diverging rays?
Can convex lenses give diverging rays? Yes, it is possible in specific circumstances. If the refractive index of the material of the medium is made using materials that have a lower refractive index than the surrounding. An air bubble in water appears like a convex lens and acts as a diverging lens.