A) 0.7 cm
B) 0.1 cm
C) 0.5 cm
D) \[\frac{1}{10}\sqrt{7}\,cm\]
Correct Answer: C
Solution :
Resultant amplitude = \[\sqrt{a_{1}^{2}+a_{2}^{2}+2{{a}_{1}}{{a}_{2}}\cos \varphi }\] = \[\sqrt{{{0.3}^{2}}+{{0.4}^{2}}+2\times 0.3\times 0.4\times \cos \frac{\pi }{2}}\]= \[0.5\,\,cm\]You need to login to perform this action.
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