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A satellite of mass “m” is in a circular orbit of radius 1.5R around the earth of radius R. How much energy is required to move it to an orbit of radius 2R?
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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A wire has a young’s modulus of 10^5N/m^2, length 1m & radius 3mm. Assuming a uniform cross sectional area, find the radius of wire after it is under a force of 1N from both ends
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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Strain can be negative. True or False?
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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Which of the following represents volumetric strain?
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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Select the correct option. B is bulk modulus. (a) Bgas > Bliquid > Bsolid (b) Bliquid > Bgas> Bsolid (c) Bsolid > Bliquid > Bgas (d) Bliquid > Bgas > Bsolid
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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Which of the following stresses causes change in density, as long as force acts on the body? (a) Shear stress (b) Compressive Stress (c) Tensile stress (d) Volumetric stress
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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Which of the following is used to measure pressure?
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Oct 4, 2021
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Class-XI-PHYSICS
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cbse
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A nail is made pointed at its end to ensure that pressure is more for a given amount of force applied on it. True or False? (a) True (b) False
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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A cylindrical tank, filled with water, has an area of 10m^2. A piston covers its entire top surface. A uniformly distributed load of 1000N is applied on the piston from top.
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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Surface energy is ________________
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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Specific heat capacity depends on the mass of the substance. True or False?
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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First law of thermodynamics is based on?
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Oct 4, 2021
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Class-XI-PHYSICS
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cbse
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Which of the following is not an assumption of KTG?
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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Which of the following describes circular motion?
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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In SHM, force at extreme position is zero. True or False?
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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A spring mass system is on a horizontal plane. Spring constant is 2N/m & mass of block is 2kg. The spring is compressed by 10cm and released.
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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Two simple pendulums of the same length are released from 10° & 20° respectively. Select the correct statement.
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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What is the frequency with which forced periodic oscillations oscillate?
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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The escape velocity at the event horizon of a black hole is 3×10^8 m/s, i.e., the velocity of light. What is the mass of the black hole if the distance from
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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A black hole is called so because it is a hypothetical object.
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Oct 4, 2021
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Class-XI-PHYSICS
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Sandeepthukran
cbse
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