1
MHT CET 2024 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The potential energy of a long spring when it is stretched by 3 cm is ' $U$ '. If the spring is stretched by 9 cm , potential energy stored in it will be

A
3U
B
4U
C
5U
D
9U
2
MHT CET 2024 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A thin uniform rod of length ' $L$ ' and mass ' $M$ ' is swinging freely along a horizontal axis passing through its centre. Its maximum angular speed is ' $\omega$ '. Its centre of mass rises to a maximum height of [ $\mathrm{g}=$ gravitational acceleration]

A
$\frac{\omega^2 \mathrm{~L}^2}{12 \mathrm{~g}^2}$
B
$\frac{\omega^2 L^2 g}{6}$
C
$\frac{\omega^2 g}{12 \mathrm{~L}^2}$
D
$\frac{\omega^2 L^2}{24 \mathrm{~g}}$
3
MHT CET 2024 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Three immiscible transparent liquids with uniform refractive indices $\frac{3}{2}, \frac{4}{3}$ and $\frac{6}{5}$ are arranged one on top of another. The depths of the liquids are 3 cm 4 cm and 6 cm respectively. The apparent depth of the vessel is

A
10 cm
B
9 cm
C
8 cm
D
7 cm
4
MHT CET 2024 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

When a hydrogen atom is raised from the ground state to the excited state

A
potential energy increases and K.E. decreases.
B
potential energy decreases and K.E. increases.
C
both K.E. and potential energy will increase.
D
both K.E. and potential energy decreases.
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