Physics

10th -

11thgrade

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BAB 6: CAHAYA DAN OPTIK

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23 questions

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  • 1. Multiple Choice
    1 minute
    5 pts
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    Rajah (a) menunjukkan cahaya bergerak dari medium X ke medium Y dan Rajah (b) menunjukkan cahaya bergerak dari medium X ke medium Z. Ketumpatan bagi medium dalam urutan menurun ialah

    Diagram (a) shows the light travels from medium X to medium Y and Diagram (b) shows the light travels from medium X to medium Z. The density of the medium in descending order is

    Z, X, Y

    Y, X, Z

    Z, Y, X

    X, Y, Z

  • 2. Multiple Choice
    5 minutes
    5 pts
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    Rajah menunjukkan satu sinar cahaya melalui satu bongkah kaca. Indeks biasan bagi kaca itu ialah 1.52. Berapakah sudut tuju?

    Diagram shows a ray of light passing in to a glass block. The refractive index of the glass is 1.52. What is the angle of incidence?

    19.7°

    33.7°

    60.7°

    68.0°

  • 3. Multiple Choice
    3 minutes
    5 pts
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    Rajah menunjukkan sinar cahaya merambat dari udara ke blok kaca. Apakah yang berlaku pada sinar cahaya apabila memasuki blok kaca?

    Diagram shows light ray travels from air to glass block. What happen to light ray when it enters the glass block?

    Cahaya terbias mendekati normal apabila memasuki blok kaca/The light refracts towards normal as it enters the glass block.

    Sudut tuju sama dengan sudut biasan/The incident angle is equal to the refracted angle.

    Cahaya merambat lebih laju apabila memasuki blok kaca/The light travels faster as it enters the glass block.

    Kecerahan cahaya bertambah apabila ia merambat di dalam blok kaca/The brightness of light increases as it travels in the glass block.

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