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CBSE Gujarat Board Haryana Board

Previous Year Papers

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Class 10 Class 12

માપન અને એકમપદ્ધતિ

ભૌતિક રાશિ Zનું પારિમાણિક સૂત્ર $straight M to the power of straight a straight L to the power of straight b straight T to the power of negative straight c end exponent$ છે. તેના દળ, લંબાઈ અને સમયના માપનમાં પ્રતિશત ત્રુટિ અનુક્રમે $straight alpha space percent sign comma space straight beta space percent sign space અન ે space gamma space percent sign$ હોય, તો ભૌતિક રાશિ Z ના માપનમાં પ્રતિશત ત્રુટિ…….. હશે.

$open parentheses straight alpha plus straight beta plus gamma close parentheses space percent sign$
$open parentheses straight alpha plus straight beta minus gamma close parentheses space percent sign$
$open parentheses aα plus bβ plus c gamma close parentheses space percent sign$
$open parentheses aα plus bβ minus c gamma close parentheses space percent sign$

fraction numerator 1 space μm over denominator 1 space fm end fraction equals...............

10⁹
10^-9
10¹⁵
10⁶

જો $straight x equals ab to the power of negative 1 end exponent$ હોય અને $increment straight a space અન ે space increment straight b$ અનુક્રમે a ને bના માપનમાં રહેલ ત્રુટિ દર્શાવતા હોય, તો xના માપનમાં મહત્તમ પ્રતિશત ત્રુટિ..........

$open parentheses fraction numerator increment straight a over denominator straight a end fraction plus fraction numerator increment straight b over denominator straight b end fraction close parentheses cross times 100$
$open parentheses fraction numerator increment straight a over denominator straight a end fraction minus fraction numerator increment straight b over denominator straight b end fraction close parentheses cross times 100$
$open parentheses fraction numerator increment straight a over denominator straight a minus straight b end fraction plus fraction numerator increment straight b over denominator straight a minus straight b end fraction close parentheses cross times 100$
$open parentheses fraction numerator increment straight a over denominator straight a minus straight b end fraction minus fraction numerator increment straight b over denominator straight a minus straight b end fraction close parentheses cross times 100$