1
MHT CET 2020 19th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

A metal rod has length, cross-sectional area and Young's modulus as $L, A$ and $Y$, respectively. If the elongation in the rod produced is I, then work done is proportional to

A
$\ell^4$
B
$\ell$
C
$\ell^3$
D
$\ell^2$
2
MHT CET 2020 19th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

The compressibility of water is $5 \times 10^{-10} \mathrm{~m}^2 / \mathrm{N}$. Pressure of $15 \times 10^6 \mathrm{~Pa}$ is applied on 100 mL volume of water. The change in the volume of water is

A
zero
B
0.75 mL decrease
C
0.75 mL increase
D
1.50 mL increase
3
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two wires of different materials have same length $$L$$ and same diameter $$d$$. The second wire is connected at the end of the first wire and forms one single wire of double the length. This wire is subjected to stretching force $$F$$ to produce the elongation I. The two wires have

A
different stress but same strain
B
different stress and different strain
C
same stress but different strain
D
same stress and same strain
4
MHT CET 2020 16th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two wires $$A$$ and $$B$$ are stretched by the same load. The radius of wire $$A$$ is double the radius of wire $$B$$. The stress on the wire $$B$$ as compared to the stress on the wire $$A$$ is

A
half
B
equal
C
twice
D
four times
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