Home
Class 10
PHYSICS
Why does a metal bar appear hotter than ...

Why does a metal bar appear hotter than a wooden bar at the same temperature ? Equivalently it also appears cooler than wooden bar if they are both colder than room temperature .

Text Solution

Verified by Experts

Due to difference in conductivity, metals having hight conductivity compared to wood. On touch with a finger, heat from the surrounding flows faster to the finger from metals and so one feels the heat. Similarly, when one touches a cold metal the heat from the finger flows away to the surrounding faster.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • NUCLEAR PHYSICS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS & ANSWER (NUMERICAL PROBLEMS)|13 Videos

  • MODEL QUESTION PAPER HIGHER LEVEL

    SURA PUBLICATION|Exercise Subjective Questions|25 Videos

  • OPTICS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS & ANSWER (Higher Order Thinking Skills (HOTS))|6 Videos

Similar Questions

Explore conceptually related problems

Why does a diamond shine more than a glass piece cut to the same shape ?

Why does the temperature less than zero on absolute scale not possible.

Knowledge Check

  • steam causes more severe burns than water at the same temperature because steam :

    A
    is in vapour state
    B
    contains less heat than water at the same temperature
    C
    contains more heat than water at the same temperature
    D
    cause burns by nature .

  • An iron tyre is to be fitted on a wooden wheel 0.1m in diameter. The miameter of the tyre is 6 mm smaller than that of the wheel. The tyre should be heated by a temperature of (coefficient of volume expansion or iron is 3.6xx10^(-5)//^(@)C )………….. .

    A
    `167^(@)C`
    B
    `334^(@)C`
    C
    `500^(@)C`
    D
    `1000^(@)C`

    • Similar Questions

    Explore conceptually related problems

    A Tungsten cathode and a thoriated-tungsten cathode have the same geometrical dimensions and are operated at the same temperature. The thoriated-tungsten cathode gives 5000 times more current than the other one. Find the operating temperature. Take relevant data from the previous problem.

    Give reasons why- (a) a steam burn is more damaging than a burn caused from boiling water at the same temperature. (b) an igloo is built as a winter shelter (c) gaps are left between railway tracks (d) chimneys are located high up in kitchens and factories (e) we wear woollen clothes in winter.

    Why temperature less than 0^@K is not possible ?

    The molecules of a gas A travel four times faster than the molecules of gas B at the same temperature. The ratio of molecular weight (M_A // M_B) will be

    On a cold winter night you are asked to sit on a chair. Would you like to choose a metal chair or a wooden chair ? Both are kept in the same lawn and are at the same temperature.

    Sudeep and Karthideyan were room mates. Sudeep was boiling water in a vessel for bathing purpose. Karthikeyan said Sudeep , you know when you touch the middle part of the vessel containing water you can feel less heat than what you can feel at the top. Sudeep was shocked to hear. Karthikeyan took a thermometer and kept it at the top surface of water. The temepature was rising .Again he inserted it deep into the vessel containing water , now the temperature has fallen down than in the previous condition .What is teh truth behind it ? (i) It is good to keep our hand deep into the vessel to check this while the liquid is boiling ? , (ii)What are convection current ?

    Home
    Profile