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Physics · May / June 2023 · Paper 62 · Question 2

0625

As printed in the paper

The question as text

A student investigates the cooling of water. Fig. 2.1 shows the set-up. thermometer lid beaker bench Fig. 2.1

Read automatically from the paper; the printed page above is exact.

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  • 2(a)[1]

    23(.0) (°C) cao

  • 2(b)(i)[1]

    s, °C

  • 2(b)(ii)[1]

    0, 30, 60, 90, 120, 150, 180

  • 2(c)(i)[1]

    Δθ = 17

  • 2(c)(ii)[2]

    R = 0.0944

    unit °C / s

  • 2(d)[2]

    any two from:

    remove lid
    thinner lid
    paint the beaker black
    stir the water
    change beaker to container that is a better conductor / named metal
    increase surface (area of water / beaker)
    use a wider beaker
    blow air over water surface / use a fan
    use a smaller volume of water

  • 2(e)[2]

    statement: view thermometer / scale / reading at right angles / eye level

    explanation: to avoid parallax error

    OR

    statement: stir (before taking reading)

    explanation: to distribute water evenly / to ensure that all the water is at the same temperature

    OR

    statement: ensure thermometer does not touch the side / base of beaker

    explanation: temperature different to that of the bulk of the liquid

    OR

    statement: wait until the thermometer (reading) stops rising at the start

    explanation: so that the maximum temperature of the liquid is recorded

  • 2(f)[1]

    negligible / very small volume / amount of water between the bottom and the top of the meniscus

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