1.

    Which of the following has four significant figures?

    A

    2300

    B

    0.230

    C

    2.30 × 10²

    D

    0.02005

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Units And Measurement
    🎯Topic:Significant Figures
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :0.5 mins
    🔄Ncert Concepts :Significant Figures, Leading Zeros, Trailing Zeros, Scientific Notation

    Related Questions

    1.

    A thin copper wire of length ll metre increases in length by 2% when heated through 10oC.{10^{\rm{o}}}C.. What is the percentage increase in area when a square copper sheet of length l metre is heated through 10oC.{10^{\rm{o}}}C.

    A

    4%4\%

    B

    8%8\%

    C

    16%16\%

    D

    None of the above

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Units And Measurement
    🎯Topic:Significant Figures
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Linear expansion, Area expansion, Percentage change

    2.

    A thin copper wire of length ll metre increases in length by 2% when heated through 10oC.{10^{\rm{o}}}C.. What is the percentage increase in area when a square copper sheet of length l metre is heated through 10oC.{10^{\rm{o}}}C.

    A

    4%4\%

    B

    8%8\%

    C

    16%16\%

    D

    None of the above

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Units And Measurement
    🎯Topic:Significant Figures
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :linear expansion, area expansion, percentage change

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