MHT CET 2025 5th May Evening Shift | Rotational Motion Question 1 | Physics

The angular momentum of a rotating body is ' $L$ '. When the frequency of rotating body is tripled and its kinetic energy is made one-third, the new angular momentum becomes

$\frac{1}{9} \mathrm{~L}$

$\frac{1}{3} \mathrm{~L}$

6 L

9 L

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

The moment of inertia of a thin uniform rod of mass ' $M$ ' and length ' $L$ ', about an axis perpendicular to length of the rod and at a distance ' $L / 4$ ' from one end is

$\frac{\mathrm{ML}^2}{6}$

$\frac{\mathrm{ML}^2}{12}$

$\frac{7 \mathrm{ML}^2}{24}$

$\frac{7 \mathrm{ML}^2}{48}$

MHT CET 2025 26th April Evening Shift

MCQ (Single Correct Answer)

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A same torque is applied to a disc and a ring of equal mass and radii then

the ring will rotate with greater angular frequency.

both will rotate with same angular frequency.

the disc will rotate with greater angular frequency.

both will rotate with same angular velocity.

MHT CET 2025 26th April Evening Shift

MCQ (Single Correct Answer)

-0

A solid sphere at rests rolls down an inclined plane of vertical height $h$ without sliding. Its speed on reaching the bottom of plane is ( $\mathrm{g}=$ acceleration due to gravity)

$\left(\frac{9 \mathrm{gh}}{11}\right)^{\frac{1}{2}}$

$\left(\frac{10 g h}{7}\right)^{\frac{1}{2}}$

$\left(\frac{8 \mathrm{gh}}{7}\right)^{\frac{1}{2}}$

$\left(\frac{6 \mathrm{gh}}{7}\right)^{\frac{1}{2}}$

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