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If the temperature of the sun were to in...

If the temperature of the sun were to increase form T to 2T and its radius from R to 2R, then the ratio of the radiant energy received on earth to what it was previously will be

A

4

B

16

C

32

D

64

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SL ARORA-Thermal Properties of Matter-Exercise
  1. A pressure cooker reduces cooking time because

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  2. Which of the following is more close to a black body?

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  3. If the temperature of the sun were to increase form T to 2T and its ra...

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  4. Two spheres of the same material have radii 1m and 4m and temperatures...

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  5. Assuming the Sun to be a spherical body of radius R at a temperature o...

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  6. The earth radiates in the infra-red region of the spectrum. The spectr...

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  7. A radiation of energy E falls normally on a perfectly reflecting surfa...

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  8. A copper ball of mass 100 g is at a temperature T. it is dropped in a ...

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  9. An external pressure P is applied on a cube at 0^(@)C so that it is eq...

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  10. A pendulum clock loses 12s a day if the temperature is 40^@C and gains...

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  11. A simple pendulum made of bob of mass m and a metallic wire of neglig...

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  12. The quantity of heat required to change the unit mass of a solid subst...

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  13. When a solid is heated, it turns directly into a gas. This process is ...

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  14. A constant pressure air thermometer gave a reading of 47.5 units of vo...

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  15. A non-conducting body floats in a liquid at 20^(@)C. with 2//3 of its ...

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  16. Calorimeters are made of which of the following

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  17. Hailstone at 0^@C from a height of 1 km on an insulating surface conve...

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  18. Statement I: The bulb of one thermometer is spherical while that of th...

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  19. On a cold morning, a metal surface will feel colder to touch than a wo...

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  20. Assertion : Woollen clothes keep the body warm in winter Reason : Ai...

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