Question

The square of resultant of two equal electric field vectors is three times their product. Angle between them is

• A. \( \frac{\pi}{5} \)
• B. \( \frac{\pi}{6} \)
• C. \( \frac{\pi}{8} \)
• D. \( \frac{\pi}{3} \)

Hint:

Use vector addition formula \( R^2 = A^2 + B^2 + 2AB\cos\theta \) when magnitudes are equal.

Answer 1

The Correct Option is D