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Page 1 PHYSICS : English & Hindi 01 1. If electronic charge e, electron mass m, speed of light in vacuum c and Plancks constant h are taken as fundamental quantities, the permeability of vacuum m 0 can be expressed in units of : (1) 2 hc me (2) 2 h me (3) 2 h ce (4) 2 2 mc he 2. A vector A is rotated by a small angle Du radians (Du<<1) to get a new vector B . In that case B A 2 is : (1) 0 (2) 2 A 1 2 Du 2 (3) A Du (4) B A Du 2 1. ØçÎ §ÜðÅþUæòÙ-¥æßðàæ e, §ÜðÅþUæòÙ-ÎýÃØ×æÙ m, çÙßæüÌ÷ ×ð´ Âý·¤æàæ ·ð¤ ßð» c ÌÍæ Üæ¡·¤ çSÍÚUæ´·¤ h, ·¤æð ×êÜ ÚUæçàæØæ¡ ×æÙ çÜØæ ÁæØ Ìæð, çÙßæüÌ÷ ·¤è ¿éÕ·¤àæèÜÌæ m 0 ·¤æ ×ææ·¤ ãæð»æ Ñ (1) 2 hc me (2) 2 h me (3) 2 h ce (4) 2 2 mc he 2. ç·¤âè âçÎàæ A ·¤æð Du ÚðUçÇUØÙ (Du<<1) æé×æ ÎðÙð ÂÚU °·¤ ÙØæ âçÎàæ B ÂýæÌ ãæðÌæ ãñÐ §â ¥ßSÍæ ×ð´ B A 2 ãæð»æ Ñ (1) àæêØ (2) 2 A 1 2 Du 2 (3) A Du (4) B A Du 2

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