Click the link for test preparation: Chapter 9 – Transfer of Heat


 Online Test Instructions

    •  Test Name : 9th Physics Chapter 9 Online Test
    •  Type : MCQ's
    •  Total Questions : 10
    •  Total Marks : 10
    •  Time : 10 minutes

  •  Questions will be shuffled each time you start the test.
  •  Any question you have not answered will be marked incorrect.
  •  Once you are finished, click the View Results button.

This quiz must be completed in 10 minutes.
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This Post Has 7 Comments

  1. Abdullah Hussain

    Sir the Mcq

    What happens to the thermal conductivity of a wall if its thickness is doubled?
    Becomes double
    remains the samewrong
    Becomes halfcorrect
    becomes one forth
    It’s answer in the is wrong beacuse it remains same bacause it depends upon the nature of the object

    1. Author

      ok, we’ll check it.

      1. FaminiB

        As thermal conductivity is inversely proportional to length (thickness),so if thickness is doubled ,thermal conductivity will be halfed.This is according to formula of thermal conductivity.

  2. Maryam

    Sir the MCQ
    Water is a
    Good conductor
    Poor conductor ❎
    Super conductor ✅
    Insulator
    Sir it’s answer is wrong because heat travels in water by conduction and convection and it is written on pg 198 in for your information

    1. Organizer

      ok, we’ll check it.

  3. Bushra

    I got 10 out of 10 marks

    1. aqa

      tuka lag gya ho ga tumhara

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