NEET Phase-I 2016 physics questions with solutions

Showing 1–10 of 12 questions

• MCQmediumCircular Motionfriction and circular motion

  A car negotiates a banked curve of radius R, banking angle θ and tyre-road static friction coefficient μₛ. The maximum safe speed is:

  Options

  • Option A

    √[g(μₛ+tanθ)/(R(1-μₛtanθ))]

  • Option B

    √[g(μₛ+tanθ)/(R²(1-μₛtanθ))]

  • Option C

    √[gR²(μₛ+tanθ)/(1-μₛtanθ)]

  • Option D

    √[gR(μₛ+tanθ)/(1-μₛtanθ)]

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• MCQmediumCircular Motionkinematics of circular motion

  A particle moves so that its position vector is r = cos(ωt) î + sin(ωt) ĵ, where ω is constant. Which statement is true?

  Options

  • Option A

    Velocity is perpendicular to r and acceleration is directed towards the origin.

  • Option B

    Velocity is perpendicular to r and acceleration is directed away from the origin.

  • Option C

    Velocity and acceleration are both parallel to r.

  • Option D

    Velocity and acceleration are both perpendicular to r.

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• MCQmediumCircular Motionkinematics of circular motion

  A particle moves such that its position vector is r = a cos(ωt)$\hat{i}$+ a sin(ωt)$\hat{j}$, where ω is constant. Which statement is true?

  Options

  • Option A

    Velocity and acceleration are both parallel to r.

  • Option B

    Velocity is perpendicular to r and acceleration is directed towards the origin.

  • Option C

    Velocity is perpendicular to r and acceleration is directed away from the origin.

  • Option D

    Velocity and acceleration are both perpendicular to r.

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• MCQeasyMathematical tools and vectorVectors

  If the magnitude of the sum of two vectors is equal to the magnitude of their difference, the angle between the vectors is:

  Options

  • Option A

    90°

  • Option B

    45°

  • Option C

    180°

  • Option D

    0°

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• MCQmediumWork , Power and Energyvertical circular motion

  What minimum speed must a mass m have when entering the bottom of a vertical loop of radius R so that it can complete the loop (string/track contact maintained)?

  Options

  • Option A

    √(2gR)

  • Option B

    √(3gR)

  • Option C

    √(5gR)

  • Option D

    √(gR)

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• MCQmediumRotational Motionquestion based on pure rotation about fixed axis

  A uniform disc of radius 50 cm starts from rest and undergoes constant angular acceleration 2 rad/s². Find the magnitude of net acceleration of a rim point after 2 s.

  Options

  • Option A

    7.0 m/s²

  • Option B

    6.0 m/s²

  • Option C

    3.0 m/s²

  • Option D

    8.0 m/s²

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• MCQeasyRotational Motionrolling on inclined surface

  A solid disc and a solid sphere of the same radius roll down two identical inclines from the same height without slipping. Which reaches the bottom first?

  Options

  • Option A

    both together

  • Option B

    depends on masses

  • Option C

    disc

  • Option D

    sphere

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• MCQmediumWork , Power and EnergyPower

  A 1 kg body starts from rest under time-dependent force F=(2t î+3t² ĵ) N. Find instantaneous power at time t.

  Options

  • Option A

    (2t²+4t⁴) W

  • Option B

    (2t³+3t⁴) W

  • Option C

    (2t³+3t⁵) W

  • Option D

    (2t+3t³) W

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• MCQmediumGravitationGravitation, Gravitational Field & Potential Energy

  At what height above Earth’s surface are gravitational potential and gravitational acceleration -5.4×10⁷ J kg⁻¹ and 6.0 m s⁻² respectively? Take Earth radius 6400 km.

  Options

  • Option A

    1600 km

  • Option B

    1400 km

  • Option C

    2000 km

  • Option D

    2600 km

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• MCQmediumGravitationAcceleration Due to Gravity & Escape Velocity

  What is the ratio of escape speed from Earth to that of a planet whose radius and mean density are both twice Earth’s?

  Options

  • Option A

    1 : 2√2

  • Option B

    1 : 4

  • Option C

    1 : √2

  • Option D

    1 : 2

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