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NEET UG 2021 Question Paper & Answers

The official NEET UG 2021 question paper, with the official answer key. Attempt as a real timed exam (with negative marking) or switch to practice mode for instant per-question answers and explanations.

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Official PYQ

NEET UG 2021 - Code M1

180 Mins 796 Marks
199Questions
796Max Marks

Sample questions from NEET UG 2021 - Code M1

1Two charged spherical conductors of radius R1R_1 and R2R_2 are connected by a wire. Then the ratio of surface charge densities of the spheres (σ1/σ2\sigma_1/\sigma_2) is :
  • A) R1R2\frac{R_1}{R_2}
  • B) R2R1\frac{R_2}{R_1}
  • C) R1R2\sqrt{\frac{R_1}{R_2}}
  • D) R12R22\frac{R_1^2}{R_2^2}
Answer: B
2The velocity of a small ball of mass M and density dd, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is d2\frac{d}{2}, then the viscous force acting on the ball will be :
  • A) Mg2\frac{Mg}{2}
  • B) MgMg
  • C) 32Mg\frac32 Mg
  • D) 2Mg2Mg
Answer: A
3An infinitely long straight conductor carries a current of 5 A as shown. An electron is moving with a speed of 10510^5 m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20 cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant. figure
  • A) 4×10−204\times10^{-20} N
  • B) 8π×10−208\pi\times10^{-20} N
  • C) 4π×10−204\pi\times10^{-20} N
  • D) 8×10−208\times10^{-20} N
Answer: D
4A dipole is placed in an electric field as shown. In which direction will it move ? figure
  • A) towards the left as its potential energy will increase.
  • B) towards the right as its potential energy will decrease.
  • C) towards the left as its potential energy will decrease.
  • D) towards the right as its potential energy will increase.
Answer: B
5A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since :
  • A) a large aperture contributes to the quality and visibility of the images.
  • B) a large area of the objective ensures better light gathering power.
  • C) a large aperture provides a better resolution.
  • D) all of the above.
Answer: D

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