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A convex lens forms a real and inverted image of a needle at a distance of 50cm from the lensWhere is the needle placed in front of the convex lens so that the image is of the same size as the object?
A convex lens forms a real and inverted image of equal size only when it is kept at the center of curvature of the lens. The image is also formed at the center of curvature at the other side. Hence, the distance of object = distance of image = 50 cm. Now, focal length = � � radius of curvature = � � 50 cm = 25 cm Hope it is clear!
What objective lens is the longest?
The lens with the greatest (positive) curvature. The lens with the highest diopter.
What is the difference between Radius of curvature and centre of curvature?
the center of curvature is the ORIGIN of the radius of curvature
What is the center of curvature of a mirror?
A plane mirror is not curved so it does not have a center of curvature. Or if you want to be mathematically correct, you could say that it's center of curvature is at an infinite distance from the mirror.
What is the relation of focal length of eye with its curvature?
More the curvature of the eye lens, lesser the focal length is. Lesser the curvature, greater the focal length is
How lens power change with curvature of lens surface?
The lens power increases as the curvature of the lens surface becomes steeper. A lens with a larger radius of curvature will have a lower power, while a lens with a smaller radius of curvature will have a higher power. This relationship is described by the lensmaker's equation, which relates the power of a lens to the refractive index of the lens material and the radii of curvature of its surfaces.
What is definition of centre of curvature of lens?
define the term centre of curvature
What is a defective curvature of the cornea and lens of the eye?
the defective curvature on the cornea or lens is called Astigmatism
A convex lens forms a real and inverted image of a needle at a distance of 50cm from the lensWhere is the needle placed in front of the convex lens so that the image is of the same size as the object?
A convex lens forms a real and inverted image of equal size only when it is kept at the center of curvature of the lens. The image is also formed at the center of curvature at the other side. Hence, the distance of object = distance of image = 50 cm. Now, focal length = � � radius of curvature = � � 50 cm = 25 cm Hope it is clear!
Does the lens in the eye have fixed curvature?
The curvature lens of an eye is a transparent structure of eye which works to refract light to be focused on retina. The curvature adjusts according to angle and view therefore it is not fixed.
What objective lens is the longest?
The lens with the greatest (positive) curvature. The lens with the highest diopter.
What is the difference between Radius of curvature and centre of curvature?
the center of curvature is the ORIGIN of the radius of curvature
The curvature of an eye's convex lens is change by?
Muceles
What is the center of curvature of a mirror?
A plane mirror is not curved so it does not have a center of curvature. Or if you want to be mathematically correct, you could say that it's center of curvature is at an infinite distance from the mirror.
What is the relation of focal length of eye with its curvature?
More the curvature of the eye lens, lesser the focal length is. Lesser the curvature, greater the focal length is
What is radius of curvature?
The radius of the sphere of which a lens surface or curved mirror forms a part is called the radius of curvature.
What determines the focal length of two sides of a lens?
Their radii of curvature and the refractive index of the material of the lens.
