Basic Maths and Units and DimensionsHard
Question
Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by l on applying a force F, how much force is needed to stretch the second wire by the same amount ?
Options
A.
9F
B.
6F
C.
4F
D.
F
Topic: Basic Maths and Units and Dimensions·Practice all Basic Maths and Units and Dimensions questions
More Basic Maths and Units and Dimensions Questions
A student performing experiment using optical bench observes that when concave mirror is at zero, and tip of object need...The length and radii of two rods made of same material are in the ratio 1 : 2 and 2 : 3 respectively. If the temperature...In young′s double slit experiment, how many maximas can be obtained on a screen (including the central maxima) on ...Two physical quantities of which one is a vector and the other is a scalar having the same dimensional formula are :...A phonograph turn-table rotating at 78 rev/min slows down and stops in 30 sec after the motor in turned off. Then the re...