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Q. The inside of a photographic camera is coated black to avoid
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Q. The inside of a photographic camera is coated black to avoid
Q. which of the following physical quantity is dimensionless
Q. During summer, we feel comfortable under a fan because it
Q. The reverse effect of X-ray emission is
Q. The fundamental scientific principle in the operation of battery is
Q. When a bullet is fired from a gun
Q. The image formed by an object on the retina of the human eye is
Q. Out of the following, which frequency is not clearly audible to the human ear?
Q. Copper wires are generally used for electrical power transmission instead of iron wire because:
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