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Question: A metallic spherical shell has a inner radius R1 and outer radius R2. A charge Q is placed at the centre of the spherical cavity. What will be surface charge density on (i) the inner surface and (ii) the outer surface? [NCERT Exemplar]

Continue ReadingQuestion: A metallic spherical shell has a inner radius R1 and outer radius R2. A charge Q is placed at the centre of the spherical cavity. What will be surface charge density on (i) the inner surface and (ii) the outer surface? [NCERT Exemplar]

Question: A free pith-ball A of 8g carries a positive charge of 5 x 10^-8 C. What must be the nature and magnitude of charge that should be given to a second pith-ball B fixed 5 cm below the former ball so that the upper ball is stationary?

Continue ReadingQuestion: A free pith-ball A of 8g carries a positive charge of 5 x 10^-8 C. What must be the nature and magnitude of charge that should be given to a second pith-ball B fixed 5 cm below the former ball so that the upper ball is stationary?

meditation

Meditation reduces stress, anxiety, and negative emotions while improving focus, memory, and emotional balance. It promotes inner peace, mindfulness, and better decision-making. Regular meditation enhances self-awareness, boosts creativity, and improves…

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