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    31.

    If a wheel completes 10 rotations in 5 seconds, what is its average angular speed in rad/s?

    A

    2Ο€ rad/s

    B

    4Ο€ rad/s

    C

    10Ο€ rad/s

    D

    20Ο€ rad/s

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Systems Of Particles And Rotational Motion
    🎯Topic:Rotational Variables
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Easy
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Rotational Motion, Angular Speed
    32.

    A point on a rotating disc is 0.5m from the center. If its linear speed is 2 m/s, what is its angular speed?

    A

    1 rad/s

    B

    2 rad/s

    C

    4 rad/s

    D

    8 rad/s

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Systems Of Particles And Rotational Motion
    🎯Topic:Rotational Variables
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Easy
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Rotational Motion, Angular Speed, Linear Speed
    33.

    A planet revolves around a star in an elliptical orbit. At what point in its orbit is the planet's speed maximum?

    A

    When it is closest to the star (perihelion)

    B

    When it is farthest from the star (aphelion)

    C

    When it is at the midpoint of the semi-major axis

    D

    The speed is constant throughout the orbit

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Gravitation
    🎯Topic:Kepler'S Laws
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Kepler's Laws, Elliptical Orbits, Orbital Speed
    34.

    Two satellites A and B are orbiting Earth at different altitudes. Satellite A is at a higher altitude than B. Which statement is correct regarding their orbital speeds?

    A

    Satellite A has a higher orbital speed than B.

    B

    Satellite A has the same orbital speed as B.

    C

    Satellite A has a lower orbital speed than B.

    D

    The orbital speed depends on the mass of the satellite.

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Gravitation
    🎯Topic:Satellites
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Satellites, Kepler's Laws, Orbital Speed, Altitude
    35.

    The escape velocity of an object from Earth's surface is approximately 11.2 km/s. If a satellite is orbiting Earth at a speed of 8 km/s, which statement is true?

    A

    The satellite will escape Earth's gravity.

    B

    The satellite is in a bound orbit.

    C

    The satellite's speed is greater than the escape velocity.

    D

    The satellite will fall back to Earth immediately.

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Gravitation
    🎯Topic:Satellites
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Satellites, Escape Velocity, Orbital Speed
    36.

    The root mean square speed of gas molecules is related to their average kinetic energy. Which of the following correctly represents this relationship?

    A

    vrms=3RTMv_{rms} = \sqrt{\frac{3RT}{M}}

    B

    vrms=RTMv_{rms} = \sqrt{\frac{RT}{M}}

    C

    vrms=2RTMv_{rms} = \sqrt{\frac{2RT}{M}}

    D

    vrms=3RT2Mv_{rms} = \sqrt{\frac{3RT}{2M}}

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Kinetic Theory of Gases
    🎯Topic:Various Speeds Of Gas Molecules
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :0.5 mins
    πŸ”„Ncert Concepts :Kinetic Molecular Theory, Root Mean Square Speed
    37.

    A container of fixed volume holds an ideal gas at a pressure PP and temperature TT. If the root mean square speed of the gas molecules is doubled while maintaining the same number density, what is the new pressure?

    A

    P

    B

    2P

    C

    3P

    D

    4P

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Kinetic Theory of Gases
    🎯Topic:Pressure And Kinetic Interpretation Of Temperature
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Kinetic Theory, Pressure, RMS Speed
    38.

    The rms speed of the molecules of a gas at a certain temperature is vv. If the temperature is increased by a factor of 4, what is the new rms speed?

    A

    v/2

    B

    v

    C

    2v

    D

    4v

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Kinetic Theory of Gases
    🎯Topic:Pressure And Kinetic Interpretation Of Temperature
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :RMS Speed, Temperature, Kinetic Theory of Gases
    39.

    If the pressure of an ideal gas is doubled while keeping the volume constant, what happens to the rms speed of the gas molecules?

    A

    Remains the same

    B

    Doubles

    C

    Increases by a factor of √2

    D

    Halves

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Kinetic Theory of Gases
    🎯Topic:Pressure And Kinetic Interpretation Of Temperature
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Pressure, Temperature, RMS Speed
    40.

    A car travels 30 m in 2 seconds and then 40 m in another 3 seconds in the same direction. What is its average speed?

    A

    10 m/s

    B

    14 m/s

    C

    7 m/s

    D

    20 m/s

    Question Tags

    πŸ“š Subject:Physics
    πŸ“‘ Chapter:Oscillations
    🎯Topic:Velocity-Acceleration
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :average speed, distance, time

    Showing 31 to 40 of 866 entries

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