Question: What is the total modulation index, if one wave has a modulation index of m1 and other wave has a modulation index of m2?
Options
A : m1 + m2
B : \frac{m_1+m_2}{2}
C : \sqrt{(m_1 \times m_2) + (m_1 \times 2m_2)}
D : \sqrt{(m_1 \times m_1) + (m_2 \times m_2)}
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