NEET physics questions with solutions

Showing 1–10 of 4657 questions

• IntegereasyUnit dimension and errorsignificant number

  The quotient 18.00/3.0 is reported correctly. Enter the number of significant figures in the final answer.

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• Multi-correctmediumSimple Harmonic Motiontime period of linear shm

  A block attached to a horizontal ideal spring is observed from a frame accelerating uniformly along the spring direction. Which statements are correct?

  Select all that apply

  • Option A

    A constant pseudo-force shifts the equilibrium position.

  • Option B

    The shift magnitude is ma/k when the frame acceleration magnitude is a.

  • Option C

    The angular frequency about the new equilibrium remains √(k/m).

  • Option D

    A constant frame acceleration does not by itself change the spring force constant.

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• MCQdifficultUnit dimension and errorvernier callipers and screw gauge

  A screw gauge has a negative zero error. When the anvil and spindle just touch, the zero of the circular scale is 4 divisions above the reference line. The circular scale has 100 divisions and the pitch is 1 mm. A wire gives PSR = 0.5 mm and CSR = 62. The corrected diameter is:

  Options

  • Option A

    1.08 mm

  • Option B

    1.12 mm

  • Option C

    1.16 mm

  • Option D

    1.20 mm

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• MCQmediumThermodynamics

  Two rectangular blocks, having identical dimensions, can be arranged either in configuration I or inconfigurationII as shownin the figure. One of the blocks has thermal conductivity k and the other 2k. The temperature difference between the ends along the x-axis is the same in both the configurations. It takes 9s to transport a certain amount of heat from the hot end to the cold end in the configuration I. The time to transport the same amount of heat in the configuration II is :-

  

  Options

  • Option A

    2.0 s

  • Option B

    3.0 s

  • Option C

    4.5 s

  • Option D

    6.0 s

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• MCQmediumKinematics part-3 Relative motionRelative motion in 2-D and shortest distance problem

  Particles A and B move with speeds v₁ and v₂ along the positive x and negative y directions respectively, with initial separation d along y as shown. The least distance between them is:

  

  Options

  • Option A

    d v₁²/(v₁²+v₂²)

  • Option B

    d v₂²/(v₁²+v₂²)

  • Option C

    d v₁/√(v₁²+v₂²)

  • Option D

    d v₂/√(v₁²+v₂²)

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• MCQeasyMathematical tools and vectorTrigonometric Function

  A student stands 20√3 m from the foot of a vertical tower. The angle of elevation of the top of the tower is 30°. Find the height of the tower.

  Options

  • Option A

    10 m

  • Option B

    20 m

  • Option C

    20√3 m

  • Option D

    40 m

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• A/RmediumAtomic Structure and X-raysx-rays and its types

  Choose the correct option for the following Assertion (A) and Reason (R).

  Assertion

  A graph of the square root of the Kα frequency against atomic number Z is approximately a straight line for a sequence of elements.

  Reason

  Moseley's law for a fixed characteristic X-ray series can be written in the form √ν = A(Z-σ), where A and the screening constant σ are approximately constant for that series.

  Options

  • Option A

    Both A and R are true and R is the correct explanation of A.

  • Option B

    Both A and R are true but R is NOT the correct explanation of A.

  • Option C

    A is true but R is false.

  • Option D

    A is false but R is true.

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• IntegermediumMathematical tools and vectorCoordinate Geometry

  If the lines kx + 2y - 3 = 0 and 4x - 2y + 5 = 0 are perpendicular, find k.

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• MCQeasyKinematics part-2 Projectile MotionMotion in 2-D and ground to ground projectile

  The point from where a ball is projected is taken as the origin of the coordinate axes. The x and y components of its displacement are given by x = 6t and y = 8t - 5t². What is the velocity of projection?

  Options

  • Option A

    6 m s⁻¹

  • Option B

    8 m s⁻¹

  • Option C

    10 m s⁻¹

  • Option D

    14 m s⁻¹

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• IntegerdifficultUnit dimension and errorvernier callipers and screw gauge

  A spherical ball has corrected diameter 2.00 cm. Taking π = 3, enter its volume in cm³ multiplied by 10.

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