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If eneryg E, velocity v and time t are taken t are taken as the fundamental units, what is the dimensional formula of intensity of radiation? |
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Answer» `Ev^(-2)t^(-3)` `ML^(0)T^(-3)=E^(a)v^(B)t^(c )` `=[ML^(2)T^(-2)]^(a)[LT^(-1)]^(b)[T]^(c )=M^(a)L^(2a+b)T^(-2a-b+c)` `:.a=1` `2a+b=0` `b=-2a=-2` `-2a-b+c=-3` `-2+2+c=-3` `c=-3` `:.I=Ev^(-2)t^(-3).` Hence correct choice is `(a)` |
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