A transformer heats up after long use mainly because of-

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JEE Main Previous Year Question Paper with Solution PDF Download

IIT JEE Advanced Physics MCQs Learn To Converge Your Dreams with Durgam Vigyan Sansthana Institute Solve these IIT JEE advanced physics MCQs. Click "View Solution" to see the detailed explanation. Question 1: A ball is thrown vertically upwards with a velocity of 20 m/s. What is the maximum height reached? (g = 9.8 m/s²) A) 10.2 m B) 15.3 m C) 20.4 m D) 25.5 m View Solution Solution: At maximum height, v = 0. Using v² = u² - 2gh → 0 = 400 - 19.6h → h = 20.41 m. Correct answer: C. Question 2: A block of mass 5 kg is pushed on a frictionless surface with a force of 10 N. What is the acceleration? A) 1 m/s² B) 2 m/s² C) 3 m/s² D) 4 m/s² View Solution Solution: F = ma → a = F/m = 10/5 = 2 m/s². Correct answer: B. Question 3: A capacitor of capacitance 10 μF is charged to 50 V. What is the energy s...

PGT physics mock test || UP PGT physics free mock test-4

1.The excess pressure inside a bubble of radius R are completely dipped inside the liquid of surface tension S is 1. 2S/r 2. 4S/r 3. 2Sr 4. S/2r 2. If a liquid wets the glass surface the free surface of liquid in the glass capillary will be: 1. Plane 2. Convex 3. Concave 4. All of the above 3. With the rise in temperature the surface tension of a liquid: 1. Increases 2. Decreases 3. Increases or decreases depending upon liquid 4. Doesn't change 4. Two spherical soap bubbles of diameter 10 cm and 6 cm respectively, are formed at the end of a narrow horizontal tube. Pressure difference between the ends of the tube is (surface tension of the soap = 3 x 10^(-2) N/m): 1. 1.6 N.m^(-2) 2. 7.6 N.m^(-2...

1. PGT Physics Mock Test || UP PGT Physics Mock Test || Physics Mock Test || PGT Physics Mock Test By Durgam Vigyan Sansthana || Mock Test of PGT Physics

PGT Physics Mock Test By DVS. Learn To Converge Your Dreams with Durgam Vigyan Sansthana Institute. Subscribe me on Youtube 1. According to Einstein mass-energy relation, one gram of matter is equivalent to cnergy of 1. 9 x 10^13 J 2. 9 x 10^14 J 3. 1 x 10^13 J 4. 6 x 10^13 J 2. If 3.6 gm of a matter is converted completely into energy, the electricity that could be obtained from is shall be: 1. 9 x 10^6 kWh 2. 1 x 10^7 kWh 3. 9 x 10^7 kWh 4. 9 x 10^8 kWh 3. If the speed of light were 2/3 of its present value, the energy released in a given in an atomic explosion 1. decreased by a factor of 2/3 2. decreased by a factor of 4/9 3. decreased by a factor of 5/9 4. decreased by a factor of 1/3 4. The sun radiate...

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