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CBSE Notes 2011-2012 » VIII-Science

Light

If the refractive index is more then optical density is

Multiple choice question

If the refractive index is more then optical density is

On refraction through a parallel faced glass slab the emergent ray is

Multiple choice question

On refraction through a parallel faced glass slab the emergent ray is

When a ray of light propagating (in a straight line) in one transparent medium enter another transpa...

Multiple choice question

When a ray of light propagating (in a straight line) in one transparent medium enter another transparent medium.

If lower half of a convex lens is painted black then

Multiple choice question

If lower half of a convex lens is painted black then

The change in focal length of an eye lens, to focus the image of objects at varying distances, is do...

Multiple choice question

The change in focal length of an eye lens, to focus the image of objects at varying distances, is done by the action oF

The human eye can focus objects at different distances by adjusting the focal length of the eye lens...

Multiple choice question

The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This ability of the eye is known as

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