NEET physics questions with solutions

Showing 1–10 of 4705 questions

• MCQeasyNuclear physicsNuclear Fission, Fusion & Nuclear Reactors

  In a nuclear power station, which sequence most correctly describes the conversion of nuclear energy into electrical energy?

  Options

  • Option A

    Nuclear energy → reactor heat → steam or working-fluid motion → turbine mechanical energy → electrical energy

  • Option B

    Nuclear energy → electrical energy directly inside the uranium nucleus

  • Option C

    Nuclear energy → chemical energy → electrical energy

  • Option D

    Neutron energy → electron mass → nuclear energy

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• MCQmediumGravitationGravitation, Gravitational Field & Potential Energy

  A body projected vertically upwards from Earth reaches a maximum height equal to Earth’s radius and returns. At which instant is the power exerted by gravity greatest?

  Options

  • Option A

    Just before the body hits Earth.

  • Option B

    It remains constant throughout.

  • Option C

    Just after the body is projected.

  • Option D

    At the highest point.

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• MCQmediumsemiconductorDiode Applications & Zener Breakdown

  A 10 V source feeds a 5 V ideal Zener through 250 Ω. Minimum Zener current for regulation is 5 mA. Maximum load current is:

  Options

  • Option A

    5 mA

  • Option B

    10 mA

  • Option C

    15 mA

  • Option D

    20 mA

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• MCQmediumGravitationAcceleration Due to Gravity & Escape Velocity

  Escape speed from Earth is 11.2 km s⁻¹. If Earth’s mass doubles and its radius becomes half the original, what is the new escape speed?

  Options

  • Option A

    22.4 km s⁻¹

  • Option B

    44.8 km s⁻¹

  • Option C

    5.6 km s⁻¹

  • Option D

    11.2 km s⁻¹

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  AIPMT 1997NEET

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• IntegermediumMathematical tools and vectorGeometry & Mensuration

  A trapezium has area 180 cm² and parallel sides 12 cm and 18 cm. Find its height in cm.

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• MCQmediumMathematical tools and vectorDifferentiation

  If y = (tan x)ˣ², find dy/dx.

  Options

  • Option A

    (tan x)ˣ²[2x log(tan x)+x²sec²x/tan x]

  • Option B

    (tan x)ˣ²

  • Option C

    -((tan x)ˣ²[2x log(tan x)+x²sec²x/tan x])

  • Option D

    0

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• Multi-correctmediumNuclear physicsRadioactivity & Radioactive Decay Law

  Three isobars of mass number A = 64 have measured neutral atomic masses: for Z = 28, M = 63.9300 u; for Z = 29, M = 63.9270 u; and for Z = 30, M = 63.9290 u. Using the mass-parabola idea for isobars, which statements are consistent with the data?

  Select all that apply

  • Option A

    The Z = 29 isobar is the most stable of the three

  • Option B

    The Z = 28 isobar can lower its mass-energy by β⁻-decay toward Z = 29

  • Option C

    The Z = 30 isobar can move toward Z = 29 through β⁺-decay or electron capture if the relevant Q-value is positive

  • Option D

    The Z = 29 isobar must necessarily undergo α-decay

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• MCQdifficultUnits, Dimensions, Measurements and ErrorsVernier Calipers and Screw Gauge: Measurement and Errors

  A screw gauge advances 3.0 mm in 8 complete rotations and has 75 divisions on its circular scale. While measuring a wire, the pitch-scale reading is 1.50 mm and the 46th circular-scale division coincides with the reference line. The zero error is +0.015 mm. The corrected diameter is:

  Options

  • Option A

    1.700 mm

  • Option B

    1.715 mm

  • Option C

    1.730 mm

  • Option D

    1.745 mm

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• MCQmediumKinematics Part-1 (one dimension)Ghraphical problem of kinematics

  The velocity-time graph shown has segments OA and AB. Which of the following statements is wrong?

  

  Options

  • Option A

    The magnitudes of average velocities during OA and AB are in the ratio 1:1.

  • Option B

    OA/OB = 1/4.

  • Option C

    The magnitudes of average accelerations are in the inverse ratio of the distances covered.

  • Option D

    The distances covered during OA and AB are in the ratio 1:3.

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• NumericmediumGeometrical opticsSpherical Mirrors & Image Formation

  A 4 cm axial rod is centred 30 cm from a concave mirror of focal length 20 cm. Its ends are therefore 28 cm and 32 cm from the pole. Find the exact image length in centimetres.

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