std 8 gujarati ch 2 ek j de chingari swadhyay | ધોરણ 8 ગુજરાતી કવિતા 2 એક જ દે ચિનગારી | dhoran 8

If ABCD is a parallelogram, vec A B=2 hat i+4 hat j-5 hat k and vec A D= hat i+2 hat j+3 hat k , then the unit vector in the direction of B D is 1/(sqrt(69))( hat i+2 hat j-8 hat k) (b) 1/(69)( hat i+2 hat j-8 hat k) 1/(sqrt(69))(- hat i-2 hat j+8 hat k) (d) 1/(69)(- hat i-2 hat j+8 hat k)

If A is a matrix of order 3 and |A|=8 , then |a d j\ A|= (a) 1 (b) 2 (c) 2^3 (d) 2^6

In Figure DE|| BC find the length of side AD is ……….. Given that AE = 1.8 cm ,BD = 7.2 cm and CE = 5.4 cm .

In given figure ABCD square is inscribed in a circle. Point E is on the circle. If AB = 8, Find the value of (AE)^(2)+(BE)^(2)+(CE)^(2)+(DE)^(2)

A benzenoid organic compound A(C_(8)H_(8)O) gives B and white crystalline solid C with Cl_(2) and NaOH . On heating compound B gives a compound with unpleasant smell with CH_(3)-CH_(2)-NH_(2) and alcoholic KOH. Compound A is

In a Std. X class, out of 40 students, 10 students use spectacles, 2 students have positive power and 8 students have negative power and 8 students have negative power of lenses in their spectacles . What does the negative power indicate ?

In a Std. X class, out of 40 students, 10 students use spectacles, 2 students have positive power and 8 students have negative power and 8 students have negative power of lenses in their spectacles . What defect of eyesight do must of the students suffer from ?

In a Std. X class, out of 40 students, 10 students use spectacles, 2 students have positive power and 8 students have negative power and 8 students have negative power of lenses in their spectacles . Give two possible reasons for the above defect .

In a Std. X class, out of 40 students, 10 students use spectacles, 2 students have positive power and 8 students have negative power and 8 students have negative power of lenses in their spectacles . What does the positive power indicate ?