JEE Main 2019 (Online) 12th January Evening Slot | Rotational Motion Question 116 | Physics

JEE Main 2019 (Online) 12th January Evening Slot

MCQ (Single Correct Answer)

-1

The moment of inertia of a solid sphere, about an axis parallel to its diameter and at a distance of x from it, is 'I(x)'. Which one of the graphs represents the variation of I(x) with x correctly ?

JEE Main 2019 (Online) 12th January Evening Slot Physics - Rotational Motion Question 119 English Option 1

JEE Main 2019 (Online) 12th January Evening Slot Physics - Rotational Motion Question 119 English Option 2

JEE Main 2019 (Online) 12th January Evening Slot

MCQ (Single Correct Answer)

-1

Two particles A, B are moving on two concentric circles of radii R₁ and R₂ with equal angular speed $$\omega $$. At t = 0, their positions and direction of motion are shown in the figure. :

JEE Main 2019 (Online) 12th January Evening Slot Physics - Rotational Motion Question 117 English

JEE Main 2019 (Online) 12th January Evening Slot Physics - Rotational Motion Question 117 English

The relative velocity $${\overrightarrow V _A} - {\overrightarrow V _B}$$ at t = $${\pi \over {2\omega }}$$ is given by :

$$ - \omega \left( {{R_1} + {R_2}} \right)\,\widehat i$$

$$\omega \left( {{R_2} - {R_1}} \right)\,\widehat i$$

$$\omega \left( {{R_1} + {R_2}} \right)\,\widehat i$$

$$\omega \left( {{R_1} - {R_1}} \right)\,\widehat i$$

JEE Main 2019 (Online) 12th January Evening Slot

MCQ (Single Correct Answer)

-1

A long cylindrical vessel is half filled with a liquid. When the vessel is rotated about its own vertical axis, the liquid rises up near the wall. If the radius of vessel is 5 cm and its rotational speed is 2 rotations per second, then the difference in the heights between the centre and the sides, in cm, will be :

2.0

1.2

0.1

0.4

JEE Main 2019 (Online) 12th January Morning Slot

MCQ (Single Correct Answer)

-1

Let the moment of inertia of a hollow cylinder of length 30 cm (inner radius 10 cm and outer radius 20 cm), about its axis be I. The radius of a thin cylinder of the same mass such that its moment of inertia about its axis is also I, is :

16 cm

12 cm

14 cm

18 cm

PREVIOUS NEXT