JEE ADVANCED 2020 PAPER 2 Q 11 Two identical non-conducting solid spheres of same mass and charge

Описание к видео JEE ADVANCED 2020 PAPER 2 Q 11 Two identical non-conducting solid spheres of same mass and charge

Two identical non-conducting solid spheres of same mass and charge are suspended in air from a common point by two non-conducting, massless strings of same length. At equilibrium, the angle between the strings is 𝛼. The spheres are now immersed in a dielectric liquid of density 800 kg m
−3 and dielectric constant 21. If the angle between the strings remains the same after the immersion, then

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