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Let the sun contracts due to self-gravit...

Let the sun contracts due to self-gravity and it becomes a black hole. If the mass of sun is `2 x 10^30` kg, then possible radius of sun to behave as a black hole is

A

5200 m

B

3000 m

C

2964 m

D

4533 m

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AAKASH INSTITUTE ENGLISH-MOCK TEST 7-Exercise
  1. At the height h above the earth's surface the acceleration due to grav...

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  2. A body of mass m is thrown from a he equal to radius of earth (A) from...

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  3. Let the sun contracts due to self-gravity and it becomes a black hole....

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  4. If a cup of tea cools from 80°C to 72°C in 5 minutes and from 72 C to ...

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  5. A wire of length is stretched by a force F to cause an extension x. An...

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  6. A satellite revolves in a circular orbit at a height of 1.6 x 10^6 m ...

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  7. The extra pressure required to decrease the volume of a liquid of Buik...

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  8. A vertical U shaped tube of uniform cross-section contains mercury in ...

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  9. Twenty seven similar mercury drops are falling through water with term...

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  10. Weight of a solid is 250 g in air, 50 g in unknown liquid and 150 g in...

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  11. A sample of 0.5 g water at 100°C and 1 atm pressure requires 270 cal h...

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  12. The velocity - time (V - t) graph of an object of mass 2 kg is as show...

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  13. Four forces are acting on a body as shown in figure. The magnitude of ...

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  14. A mass m is connected to a massless rod of length l( and is free to ro...

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  15. An object having kinetic energy of 50 J is moving with linear momentum...

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  16. The tension in the cord connected to motor is 15000 N and mass of the ...

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  17. A pump of power P ejects M kg water per second through a horizontal pi...

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  18. Forces of equal magnitude of 0.5 N are acting on a square plate of sid...

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  19. IF linear mass density a rod of length 2 m is changing with position a...

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  20. Which of the following statements is correct?

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