1
TG EAPCET 2024 (Online) 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
A wire of cross-sectional area $10^{-6} \mathrm{~m}^{2}$ is elongated by $0.1 \%$ when the tension in it is 1000 N . The Young's modulus of the material of the wire is (assume radius of the wire is constant)
A
$10^{11} \mathrm{Nm}^{-2}$
B
$10^{12} \mathrm{Nm}^{-2}$
C
$10^{10} \mathrm{Nm}^{-2}$
D
$10^{9} \mathrm{Nm}^{-2}$
2
TG EAPCET 2024 (Online) 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A block of mass 2 kg is tied to one end of a 2 m long metal wire of $1.0 \mathrm{~mm}^2$ area of cross-section and rotated in a vertical circle such that the tension in the wire is zero at the highest point. If the maximum elongation in the wire is 2 mm , the Young's modulus of the metal is

(Acceleration due to gravity $=10 \mathrm{~ms}^{-2}$ )

A
$1.0 \times 10^{11} \mathrm{Nm}^{-2}$
B
$1.2 \times 10^{11} \mathrm{Nm}^{-2}$
C
$2.0 \times 10^{11} \mathrm{Nm}^{-2}$
D
$0.2 \times 10^{11} \mathrm{Nm}^{-2}$
3
TG EAPCET 2024 (Online) 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
If the length of a string is $P$ when the tension in it is 6 N and its length is $Q$ when the original length of the string is
A
$3 P+4 Q$
B
$3 P-4 Q$
C
$4 P+3 Q$
D
$4 P-3 Q$
4
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
A steel wire of length 3 m and a copper wire of length 2.2 m are connected end to end. When the combination is stretched by a force, the net elongation is 1.05 mm . If the area of cross-section of each wire is $6 \mathrm{~mm}^2$, then the load applied is (Young's moduli of steel and copper are respectively $2 \times 10^{11} \mathrm{Nm}^{-2}$ and $1.1 \times 10^{11} \mathrm{Nm}^{-2}$ )
A
180 N
B
90 N
C
135 N
D
120 N
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