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← JEE Main 2022 · 28 Jul · Shift 1
PhysicsInteger+4 / -1Question 56 of 90

JEE Main 2022 · 28 Jul · Shift 1, Physics question 56

Two electric dipoles of dipole moments 1.2×10−301.2\times10^{-30} Cm and 2.4×10−302.4\times10^{-30} Cm are placed in two different uniform electric fields of strengths 5×1045\times10^4 NC−1^{-1} and 15×10415\times10^4 NC−1^{-1} respectively. The ratio of maximum torque experienced by the electric dipoles will be 1x\dfrac1x. The value of xx is ______.

Answer and worked solution

Official answer: 6

Maximum torques. pEpE: 1.2×5=61.2\times5=6 and 2.4×15=362.4\times15=36 (in units of 10−2610^{-26} N m). Ratio 16\frac16.

Answer: 6