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In summer, a mild wind is often found on...

In summer, a mild wind is often found on the shore of a calm river. This is accused due to

A

difference in thermal conductivity of water and soil

B

convecction currents

C

conduction between air and the soil

D

radiation from the soil

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-TRANSMISSION OF HEAT-LECTURE SHEET (EXERCISE-II) Thermal Radiation (Straight Objective Type Questions)
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  2. A black body does not

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  3. In summer, a mild wind is often found on the shore of a calm river. Th...

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  5. The emissivity of tungsten is approximately 0.35. A tungsten sphere 1 ...

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  6. Consider a block of copper of radius 5 cm. Its outer surface is coated...

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  7. A solid copper sphere (density rho and specific heat c) of radius r at...

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  8. Two solid spheres of same ,naterial but diameters in the ratio of 5 : ...

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  9. Two identical bodies of emissivities 0.01 and 0.16 and at different te...

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  10. 'Gulab Jamuns' (assumed to be spherical) are to be heated in an oven. ...

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  11. If the total surface area of human body is 1.2m^(2) and the surface te...

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  12. Two solid steel cylinders A and B of same temperature (higher than the...

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  13. The power radiated by a black body is P, and it radiates maximum energ...

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  14. A solid cuboid with edges 1 cm, 2 cm and 3 cm is suspended in vacuum, ...

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  15. A flat rectangular surface of dimension 15" cm"xx2" cm" is placed perp...

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  16. A body at 50^(@)C cools in a surroundings maintained at 30^(@)C. The t...

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  17. A body cools form 50^(0)C to 40^(0)C in 6 minutes. When its surroundin...

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  18. A sphere of ice at 0^(@)C having initial radius R is placed in an envi...

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  19. Four spheres A, B, C and D of different metals but of same radius are ...

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  20. Temperature of a body theta is slightly more than the temperature of t...

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