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Why does the focal length of a mirror not depend on the mirror material when the focal length of a lens does depend on the lens material?
The focal length for a mirror is determined by the law of reflection from the mirror surface. This law is not governed by the material that the mirror is made by. This means that the focal length depends only on the radius and curvature. Conversely, the focal length of a lens depends on the indices of refraction of the lens meterial and the surrounding medium.
A concave mirror and a convex lens are held in waterwhat changes if any do you expect in their focal length?
Excellent question. The answer is actually yes! According to the lens makers formula, it will change based on the refractive index of the material of the concave mirror wrt the medium. Google Lens makers formula for better understanding! NO! the focal length of the mirror will not change if it would be a lens then the focal length would change. The lens maker's formula is for Lenses only!
Do all light waves that strike a convex lens pass through the focal point?
No, not all light waves that strike a convex lens pass through the focal point. Light waves that are parallel to the principal axis will pass through the focal point after refraction, while light waves that strike the lens at different angles will converge at different points along the focal plane.
What will happen to the focal length of a concave mirror or a convex mirror when the incident violet light on them is replaced by red light?
Nothing. The focal length is defined as point where all of the light converges after passing through the lens ( for a convex mirror)and only depends on the mirror's curvature. So changing the incident light ray will cause no change in the focal length of the mirror.
How to calculate x of a lens knowing only the focal length which is the distance from the lens to the image of sun formed by it correct me if I'm wrong?
1/(focal length) = 1/(distance of object) + 1/(distance of image) is the formula for calculating x of a lens knowing only the focal length which is the distance from the lens to the image of sun formed by it.
Where can I find a replacement lens for the mirror of my 2004 Expedition?
So far I can find only entire mirror assemblies...I only need the lens.
What is the advantage of using a concave mirror in the place of convex lens as objective in a telescope?
-- The lens must be transparent. The mirror must only be solid. -- The lens must be perfect through and through. The mirror only needs a perfect surface. -- The lens needs two perfectly shaped surfaces. The mirror needs only one. -- The lens can be supported only around its edge. The mirror can be supported at as many points across its back as desired.
How tall mirror do you need to see your body full length?
That will depend upon your focal length--how far your eye is from the mirror. At a useful focal length the mirror can only be a few inches shorter than the subject.
What is the only location where concave mirror will not produce an image?
At the focal point of the mirror, a concave mirror will not produce a real image. This is because at the focal point, the reflected rays are parallel and do not converge to form a real image.
Point at which light rays are converged by a convex lens?
Focus (only at the focal point if the incoming rays are all parallel to the axis).
Will the focal length of concave lens change in water?
no, because this happens only in the cases of lenses
How is the focal length of a spherical mirror affected when the wavelength of light used is increased?
The focal length of a spherical mirror is not affected by the wavelength of light used. It is determined by the mirror's radius of curvature and refractive index of the surrounding medium. The wavelength of light only influences the diffraction effects, not the focal length.
