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Friday, 9 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 6 April 2023, Shift 1, Physics Q39

Question 39 of 90 in this shift, Physics question 9 of 30, Section A.

A particle is moving with constant speed in a circular path. When the particle turns by an angle 90∘90^\circ, the ratio of instantaneous velocity to its average velocity is π:x2\pi : x\sqrt2. The value of xx will be -
  1. (1)7
  2. (2)5
  3. (3)2Official answer
  4. (4)1

Official answer

Option 3

NTA final key.

Same topic in other shifts

All Kinematics in 2D questions
  1. 8 Apr 2024, Shift 1 · Q51Three vectors OP→\overrightarrow{OP}, OQ→\overrightarrow{OQ} and OR→\overrightarrow{OR} each of magnitude AA are acting as shown in figure.…EasyNumerical valueHas a figure
  2. 30 Jan 2024, Shift 2 · Q51A vector has magnitude same as that of A⃗=3i^+4j^\vec{A} = 3\hat{i} + 4\hat{j} and is parallel to B⃗=4i^+3j^\vec{B} = 4\hat{i} + 3\hat{j}. The xx and yy…EasyNumerical value
  3. 31 Jan 2024, Shift 1 · Q51A body starts falling freely from height HH hits an inclined plane in its path at height hh. As a result of this perfectly elastic…HardNumerical value
  4. 16 Mar 2021, Shift 2 · Q16A mosquito is moving with a velocity v⃗=0.5 t2i^+3tj^+9k^\vec{v}=0.5\,t^2\hat{i}+3t\hat{j}+9\hat{k} m/s and accelerating in uniform conditions. What will be…MediumSingle correct
  5. 8 Jan 2020, Shift 1 · Q21A particle is moving along the xx-axis with its coordinate with time 't' given by x(t)=10+8t−3t2x(t) = 10+8t-3t^2. Another particle is moving along…MediumNumerical value
  6. 9 Jan 2020, Shift 2 · Q2A particle starts from the origin at t=0t=0 with an initial velocity of 3.0 i^3.0\,\hat{i} m/s and moves in the xx-yy plane with a constant…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.