JEE Main 2021 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 24 February 2021, Shift 1, Physics Q25

Question 25 of 90 in this shift, Physics question 25 of 30, Section B.

An inclined plane is bent in such a way that the vertical cross-section is given by

y=\frac{x^{2}}{4}

where

y

is in vertical and

x

in horizontal direction. If the upper surface of this curved plane is rough with coefficient of friction

\mu=0.5

, the maximum height in cm at which a stationary block will not slip downward is __________ cm.

Official answer

NTA final key.

Chapter: Laws of Motion
Topic: Friction
Idea tested: Friction on Inclines

Same idea in other shifts

Asked 3× in all

7 Apr 2025, Shift 1 · Q30A cubic block of mass m is sliding down on an inclined plane at $60^\circ$ with an acceleration of $\frac{g}{2}$ , the value of coefficient…EasySingle correct
31 Jan 2024, Shift 1 · Q34In the given arrangement of a doubly inclined plane two blocks of masses $M$ and $m$ are placed. The blocks are connected by a light…MediumSingle correctHas a figure

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 108 of the 174 JEE Main shifts held from 2017 to 2026.