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NEET/JEE PHYSICS FOR BEGINNERS

NUMERICAL ON KIRCHHOFF'S LAW

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March 09, 2022

CBSE PHYSICS K12 PHYSICS

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Physics NEET test arrangement, earlier year questions, answers, and solution #7

February 24, 2022

NEET PHYSICS TEST ARRANGEMENT: QUESTION: A capillary tube of radius 'r' is immersed in water and the water rises it to a height h.The mass of the water in the capillary tube is 5 g. Another capillary tube of radius '2r' is immersed in water.The mass of the water that will rise in the tube is; [A]. 2.5 g [B]. 5.0 g [C]. 10.0 g [D]. 20.0 g ANSWER: ANSWER - [C] SOLUTION: CAPILLARY RISE: A capillary tube (glass tube) of radius 'r 'is dipped in water, the surface pulls the capillary walls in downward direction. Capillary walls pull the surface in upward direction. By the way the water in the tube will rise above the adjacent liquid level till the forces get balanced. This rises what we called it as capillary rise WHAT ARE THE TWO FORCES ACTING AT EQUILIBRIUM? 1. First one is the weight of the water column, acting downwards. ...

Physics NEET test arrangement, earlier year questions, answers, and solution #6

February 22, 2022

NEET PHYSICS TEST ARRANGEMENT: QUESTION: A body weighs 72 N on the surface of the earth.What is the gravitational force on it, at a height equal to half the radius of the Earth. [A] 48 N [B] 32 N [C] 30 N [D] 24 N ANSWER: ANSWER - [B] SOLUTION: GRAVITATIONAL FORCE: Earth’s gravity comes from all its mass. All its mass makes a combined gravitational pull on the mass of other body. Objects with more mass have more gravity. Gravity gets weaker with distance. That is given by the Newton’s universal law of gravitation which states that ‘Every body on the universe attracts every other body with a force which is directly proportional to the product of their masses and inversely proportional to the square of the mean distance between them’. EXAMPLES: The gravitational pull on the moon pulls the seas towards it causing the ocean tides. The sun’s gravity keeps earth in orbit around it. GRAVITATION...

PHYSICS PRACTICAL CLASS 12

August 17, 2023

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