Physics - Single MCQs (Page 27)

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Q261. A vector can be multiplied by a number. The number may be?...Q262. Addition of vector obeys?...Q263. The direction of a vector in spece is specified by?...Q264. Rectangular coordinate system is also called?...Q265. Electron moves in the orbit as?...Q266. Compton effect proves the?...Q267. The uncertainty in momentum & position is due to its?...Q268. A three dimensional image is obtained by?...Q269. In electron microscope electric & magnetic fields are used as?...Q270. In electron microscope we use energetic particles because of?...