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A) Natural convection can take place in ...

A) Natural convection can take place in gravity free region
B) Forced convection is the principle in main taining constant temperature of our body.

A

A is correct, B is wrong

B

Both A & B are correct

C

A is wrong, B is correct

D

Both A & B are wrong

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-IA
  1. The gas constant for a molecule is (terms have usual meaning) a) K ...

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  2. The units of universal gas constant is a) Jmol^(-1)K^(-1) b) Jkg^(...

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  3. A) Generally solids are better conductors than liquids B) Liquids ar...

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  4. Water is taken in a metal container and is heated at its bottom. The a...

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  5. For a good cooking vessel, the necessary characterstics are a) Large...

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  6. A) Heat transfer by conduction & convection require a material medium ...

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  7. A) A body of low Thermal capacity gets heated or cooled quickly B) G...

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  8. Two identical conductors made of metals of coefficients of thermal con...

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  9. A) A hot hollow sphere in vacuum cools by convection B) A hot solid ...

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  10. A) Natural convection can take place in gravity free region B) Force...

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  11. In a common room heating system, Statement (A): Hot water is circula...

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  12. A) Polished surface is a poor absorber but good reflector B) Rough ...

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  13. A spherical black body is of radius 'r'. Its radiating power is 'P' an...

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  14. Statement (A) : Water can be boiled in a thin paper box without even c...

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  15. A piece of charcoal and a piece of shining steel of the same area are ...

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  16. A glass full of hot milk is poured on the table. It begins to cool gra...

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  17. A glass full of hot milk is poured on the table. It begins to cool gra...

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  18. In Newton's law of cooling, if the rates of emission of radiation by a...

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  19. In which one of the following cases does the thermal conductivity incr...

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  20. The thermal conductivites of copper, mercury and glass are respectivel...

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