1.

    The speed of light is approximately 3imes1083 imes 10^8 m/s. If a star is 4 light-years away, what is its distance in kilometers? (1 light-year = distance light travels in one year)

    A

    3.8imes10103.8 imes 10^{10} km

    B

    1.2imes10131.2 imes 10^{13} km

    C

    3.8imes10133.8 imes 10^{13} km

    D

    1.2imes1091.2 imes 10^9 km

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Units And Measurement
    🎯Topic:Conversion Of Units For One System To Another
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Unit Conversion, Speed, Distance, Time

    Related Questions

    1.

    Which of the following sets have different dimensions?

    A

    Pressure, Young’s modulus, Stress

    B

    Emf, Potential difference, Electric potential

    C

    Heat, Work done, Energy

    D

    Dipole moment, Electric flux, Electric field

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Units And Measurement
    🎯Topic:Conversion Of Units For One System To Another
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Medium
    ⚡ Time Required :3 mins
    🔄Ncert Concepts :Dimensional analysis, Pressure, Young's modulus, Stress, Emf, Potential difference, Electric potential, Heat, Work done, Energy, Dipole moment, Electric flux, Electric field

    2.

    If V denotes the potential difference across the plates of a capacitor of capacitance C, the dimensions of CV2C{V^2} are

    A

    Not expressible in MLT

    B

    MLT−2ML{T^{ - 2}}

    C

    M2LT−1{M^2}L{T^{ - 1}}

    D

    ML2T−2M{L^2}{T^{ - 2}}

    Question Tags
    📚 Subject:Physics
    📑 Chapter:Units And Measurement
    🎯Topic:Conversion Of Units For One System To Another
    🎓 Ncert Level:Application
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Capacitance, Potential Difference, Energy stored in a capacitor, Dimensional analysis

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