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Two vessels of different materials are s...

Two vessels of different materials are similar in size in every respect. The same quantity of ice filled in them gets melted in 20 minutes and 30 minutes. The ratio of their thermal conductivities will be

A

1.5

B

1

C

2/3

D

4

Text Solution

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The correct Answer is:
a
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CHETAN PUBLICATION-HEAT-State whether following statement are True or False. If false; rectify the statement.
  1. True or False : Different substances have different melting points.

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  2. True or False : Different substances have same specific heat capacitie...

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  3. Two vessels of different materials are similar in size in every respec...

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  4. If the ratio of coefficient of thermal conductivity of silver and copp...

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  5. True or False: Presence of moisture in air is called humidity.

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  6. The thickness of a metallic plate is 0.4 cm. The temperature between i...

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  7. True or False : Water vapour content of air is measured by relative h...

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  8. True or False : Absolute humidity is measured in g // m^(3)

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  9. The dimensions of thermal resistance are

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  10. A slab consists of two parallel layers of copper and brass of the same...

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  11. True or False: S.I. unit of heat is joule.

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  12. True or False: In CGS system, heat is measured in joules.

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  13. True or False: 1 J = 4.18 cal.

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  14. True or False: Specific heat is denoted by letter 'h'.

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  15. True or False: Specific heat capacity is measured in SI system in J//k...

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  16. True or False: In CGS, specific heat capacity can be measured in calor...

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  17. True or False: Thermometer is used to measure specific heat capacity.

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  18. True or False: The specific heat capacity of water is 1.0 cal//g^(@)C

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