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Q. The dimension of Planck constant equals to that of
The dimension of Planck constant equals to that of angular momentum.
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Q. Pycnometer is an instrument used to measure the
Q. The focal length of the lens in a photographic camera is 5 cm. What is the power of the lens?
Q. Convex mirrors are used as a rear view mirror in motor cycles as
Q. Who firstly predicated the existence of electromagnetic waves
Q. The value of which one of the following quantity remains same in all system of units ?
Q. The amount of matter in a ball of steel is its :
Q. At the Curie temperature, the ferromagnetic materials get converted into
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