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Why focal length of convex lens is easier to find than a concave lense?
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Length of a lens is the distance from the center of the lens to its principal focus?
It is called the focal length. It is equal to 1/2 times r, and is positive on concave mirrors and negative on convex mirrors.
What is the difference between the focus of concave and convex mirror?
the focal point of a concave mirror is positive while a convex is negative
How can a rough value of the focal length of a concave mirror be obtained?
rough focal length of concave mirror
Difference between focal point and focal length?
The focal point is the point where light converges after it passes through a concave lens. The focal length is the distance of the focal point to the lens. Same for a convex lens, except that the focal point is the imaginary point from where light deflected from lens seems to have emerged.
What creates an image that is reflected through a focal point?
a convex lens
What is the positive lens is the same as?
The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, a concave mirror, and a convex mirror. The focal length of an optical system is a measure of how strongly the system converges or diverges light.
A concave lens is kept in contact with convex lens of focal length 20cm the combination works as a converging lens of focal length 100cmcalculate the power of concave lens?
i think it is -0.06m i.e. 6cm
The distance between a mirror and its focal point is called the?
Focal length, positive number with a concave mirror, negative for a convex mirror.
Length of a lens is the distance from the center of the lens to its principal focus?
It is called the focal length. It is equal to 1/2 times r, and is positive on concave mirrors and negative on convex mirrors.
What is focal length of a door peephole's lens and is it concave or convex?
The lens in a door peephole is a convex lens with a very short focal length, giving it a wide field of view. If it were on a camera, it would be called a "Fisheye lens".
What is the difference between the focus of concave and convex mirror?
the focal point of a concave mirror is positive while a convex is negative
How can a rough value of the focal length of a concave mirror be obtained?
rough focal length of concave mirror
Difference between focal point and focal length?
The focal point is the point where light converges after it passes through a concave lens. The focal length is the distance of the focal point to the lens. Same for a convex lens, except that the focal point is the imaginary point from where light deflected from lens seems to have emerged.
What creates an image that is reflected through a focal point?
a convex lens
Why the study was under taken of focal length of a convex lens by graphical method?
to determine the focal length of a convex mirror.
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.
Where would you stand if you wanted to see an upside down reflection of yourself in a convex mirror?
It is not possible to do this with a convex mirror. If the mirror is concave you just have be twice the focal length away from the surface of the mirror or more.
