JEE Main 2015 · 10 Apr · Shift 1 · Physics Q2

← JEE Main 2015 · 10 Apr · Shift 1

PhysicsSingle correct+4 / -1Question 2 of 90

If a body moving in a circular path maintains constant speed of 10 ms $^{-1}$ , then which of the following correctly describes relation between acceleration and radius ?

a constant, independent of r

Graph of a against r: a horizontal line.

a increasing linearly with r

Graph of a against r: a straight line through the origin.

a decreasing with r along a hyperbola-like curve

Graph of a against r: a curve falling steeply and flattening towards the r-axis.

a increasing with r and levelling off

Graph of a against r: a curve rising from the origin and levelling off.

Answer and worked solution

Official answer: C

$a=\dfrac{v^2}r=\dfrac{100}r$ : a decreasing, hyperbola-like curve, graph (3).

Topics:Uniform circular motion

← Previous question Next question →

JEE Main 2015 · 10 Apr · Shift 1, Physics question 2