Positive, since it converges light. Question 17: Give the len’s formula. Answer: NCERT Science Lab Manual Practical Based Questions Question 1: Just by looking at an object, how do you come to know whether it is a smooth surface or rough one?
These lenses have a convex and a concave surface, and they can be positive or negative lenses. Crescent lens Meniscus lens A crescent lens is usually used together with another lens in composite optical assemblies. When used in this struct...
These lenses have a convex and a concave surface, and they can be positive or negative lenses. Crescent lens Meniscus lens A crescent lens is usually used together with another lens in composite optical assemblies. When used in this ...
The sign of the focal length will determine whether the lens is concave (positive) or convex (negative). The sign of the image distance will tell if it is real (positive) or if it is virtual (negative). Answer and E...
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Answer to: The image produced by a convex mirror is always closer to the mirror than it would be in a plane mirror for the same object distance...
This is its negative side. Its positive side is Making you notice life and the stresses That only seemed to go away, but now, As this new mode questions, are seen to be Hastening out of style. If they are to become classics They must decide which side they are on. Their reticence ...
where m is called the magnification or, sometimes, the transverse magnification; m is negative for a positive lens projecting a real image. It is sometimes convenient to write the object and image distances l′ and l in terms of the focal lengths f′ and f, and the magnification m: (4)...
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Positive second derivative corresponds to convex (you can figure this as the tangent being below the graph of the function near the point). Negative second derivative corresponds to concave (you can figure this as the tangent being abovethe graph of the function near the point). The function ...