Gujarati
3-1.Vectors
easy

निम्न में से कौनसा सत्य नहीं है ? यदि $\mathop A\limits^ \to = 3\hat i + 4\hat j$ तथा $\overrightarrow B = 6\hat i + 8\hat j$ यहाँ $A$ तथा $B$ सदिश$\mathop A\limits^ \to $ तथा $\overrightarrow B $ के परिमाण हैं

A

$\mathop A\limits^ \to \times \mathop B\limits^ \to = 0$

B

$\frac{A}{B} = \frac{1}{4}$

C

$\overrightarrow {A\,.} \,\overrightarrow B = 50$

D

$A = 5$

Solution

(b) $|\mathop A\limits^ \to | = 5$, $|\mathop B\limits^ \to | = 10$==> $\frac{A}{B} = \frac{1}{2}$

Standard 11
Physics

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