Physics
Grade-10
Easy
Question
The mathematical relation between the focal length, the object distance and the image distance for a lens is called _____.
- The lens formula
- The mirror formula
- The formula of lenses
- The formula of refraction
Hint:
The correct answer is: The lens formula
- The mathematical relation between the focal length, the object distance and the image distance for a lens is called _Lens Formula_
is Lens Formula
is Lens FormulaRelated Questions to study
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The formula below is called ______.
1/f = 1/v - 1/u
The formula below is called ______.
1/f = 1/v - 1/u
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An object is standing towards the left of a concave lens. What should be the sign of the object distance?
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The lens formula is valid for ____.
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A convex lens is of radius of curvature 104 cm. A parallel beam of light shone on the lens converges to a point at a distance of ____ cm from the optic center.
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Focal length of one side of a biconcave lens is 76 cm. Its second focal length would measure ____ cm.
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The radius of curvature of a convex lens whose focal length is 25 cm is ____ cm.
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A light ray passing through the optical center of a lens ____.
A light ray passing through the optical center of a lens ____.
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In case of refraction through a concave lens, the emergent ray is _____ to the incident ray.
In case of refraction through a concave lens, the emergent ray is _____ to the incident ray.
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A convex lens in a magnifying glass can be used to focus the Sun’s light rays onto a paper, which lights up a fire after some time. What would happen if the magnifying glass were replaced with a concave lens?
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Concave and convex lenses are also called _____ and _____ lenses respectively.
Concave and convex lenses are also called _____ and _____ lenses respectively.
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The curved surface in spherical surface is a _____ surface.
The curved surface in spherical surface is a _____ surface.
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A concave lens is of radius of curvature 94 cm. A parallel beam of light shone on the lens appears to diverge from a point at a distance of ____ cm from the optic center.
A concave lens is of radius of curvature 94 cm. A parallel beam of light shone on the lens appears to diverge from a point at a distance of ____ cm from the optic center.
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