A blue object on a white background when seen through a blue filter will appear

May 2, 2022

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A blue object on a white background when seen through a blue filter will appear

Q. A blue object on a white background when seen through a blue filter will appear :

A. Black on a blue background

B. Blue on a white background

C. Blue on a red background

D. Invisible

Answer: Invisible

A blue object on a white background when seen through a blue filter will appear

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When light travels from one medium to other whose refractive index is different, then which of the given will change?

A blue object on a white background when seen through a blue filter will appear

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Two thin lenses, one of focal length +60 cm and the other of focal length -20 cm are kept in contact. Their combined focal length is

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