A 100 m long wire having cross-sectional area and Young's modulus is is subjected to a load of 250 N. Then the elongation in the wire will be: [2023]

STUDY MATERIALS
COURSES
MORE
SUCCESS STORY
ADMISSION
STORE

Back

JEE ADVANCE

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

JEE MAIN

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

NEET

CLASS XI - XII
CRASH COURSE

CLASS XI - XII

CRASH COURSE

BITSAT

CLASS XI - XII

CLASS XI - XII

CBSE BOARD

CLASS IX

CLASS X

CLASS XI

CLASS XII

CLASS VI

CLASS VII

CLASS VIII

UP BOARD

CLASS IX
CLASS X
CLASS XI
CLASS XII

CLASS IX

CLASS X

CLASS XI

CLASS XII

CUET

CRASH COURSE

CRASH COURSE

Courses

CLASSROOM COURSES
ONLINE COURSES

ONLINE COURSES

More

Solution

Q.
A $100 m$ long wire having cross-sectional area $6.25 \times 10^{- 4} m^{2}$ and Young's modulus is $10^{10} {Nm}^{- 2}$ is subjected to a load of 250 N. Then the elongation in the wire will be: [2023]

1 $6.25 \times 10^{- 3} m$

2 $4 \times 10^{- 3} m$

3 $4 \times 10^{- 4} m$

4 $6.25 \times 10^{- 6} m$

Ans.
(2)

$Elongation in wire δ = \frac{F l}{A Y}$

$δ = \frac{250 \times 100}{6.25 \times 10^{- 4} \times 10^{10}} = 4 \times 10^{- 3} m$

Want Us to Email you About Special Offers & Updates?