Q. No.A particle moving with uniform speed in a circular path maintains:
| 1. | constant acceleration. |
| 2. | constant velocity but varying acceleration. |
| 3. | varying velocity and varying acceleration. |
| 4. | constant velocity. |
Subtopic: Circular Motion |
58%
From NCERT
NEET - 2024
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For a smoothly running analog clock, the ratio of the number of rotations made in a day by the hour hand to the second hand, respectively, is:
1. \(24 :1\)
2. \(1:720\)
3. \(1:60\)
4. \(2:5\)
1. \(24 :1\)
2. \(1:720\)
3. \(1:60\)
4. \(2:5\)
Subtopic: Circular Motion |
62%
From NCERT
NEET - 2024
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A particle is executing uniform circular motion with velocity \(\vec v\) and acceleration \(\vec a.\) Which of the following is true?
| 1. | \(\vec v\) is a constant; \(\vec a\) is not a constant. |
| 2. | \(\vec v\) is not a constant; \(\vec a\) is not a constant. |
| 3. | \(\vec v\) is a constant; \(\vec a\) is a constant. |
| 4. | \(\vec v\) is not a constant; \(\vec a\) is a constant. |
Subtopic: Circular Motion |
56%
From NCERT
NEET - 2023
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Two particles \(A\) and \(B\) are moving in a uniform circular motion in concentric circles of radii \(r_A\) and \(r_B\) with speeds \(v_A\) and \(v_B\) respectively. Their time periods of rotation are the same. The ratio of the angular speed of \(A\) to that of \(B\) will be:
| 1. | \( 1: 1 \) | 2. | \(r_A: r_B \) |
| 3. | \(v_A: v_B \) | 4. | \(r_B: r_A\) |
Subtopic: Circular Motion |
79%
From NCERT
NEET - 2019
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In the given figure, \(a=15\) m/s2 represents the total acceleration of a particle moving in the clockwise direction in a circle of radius \(R=2.5\) m at a given instant of time. The speed of the particle is:
1. \(4.5\) m/s
2. \(5.0\) m/s
3. \(5.7\) m/s
4. \(6.2\) m/s
Subtopic: Circular Motion |
61%
From NCERT
NEET - 2016
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A particle moves so that its position vector is given by, \(\overrightarrow{r}=\cos \omega t ~\hat{x}+ \sin \omega t~ \hat{y},\) where \(\omega\) is a constant. Which of the following is true?
| 1. | velocity and acceleration both are parallel to \(\overrightarrow{r}.\) |
| 2. | velocity is perpendicular to \(\overrightarrow{r}\) and acceleration is directed towards to origin. |
| 3. | velocity is parallel to \(\overrightarrow{r}\) and acceleration is directed away from the origin. |
| 4. | velocity and acceleration both are perpendicular to \(\overrightarrow{r}.\) |
Subtopic: Circular Motion |
78%
From NCERT
NEET - 2016
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A particle of mass \(10\) g moves along a circle of radius \(6.4\) cm with a constant tangential acceleration. What is the magnitude of this acceleration, if the kinetic energy of the particle becomes equal to \(8 \times 10^{-4}\) J by the end of the second revolution after the beginning of the motion?
| 1. | \(0.15\) m/s2 | 2. | \(0.18\) m/s2 |
| 3. | \(0.2\) m/s2 | 4. | \(0.1\) m/s2 |
Subtopic: Circular Motion |
53%
From NCERT
NEET - 2016
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The position vector of a particle \(\vec{R }\) as a function of time \(t\) is given by:
\(\vec{{R}}=4 \sin (2 \pi {t}) \hat{i}+4 \cos (2 \pi {t}) \hat{j},\)
where \(R\) is in metres, \(t\) is in seconds and \({\hat{i},\hat{j}}\) denotes unit vectors along \({x}\) and \({y}\text-\)directions, respectively. Which one of the following statements is wrong for the motion of the particle?
\(\vec{{R}}=4 \sin (2 \pi {t}) \hat{i}+4 \cos (2 \pi {t}) \hat{j},\)
where \(R\) is in metres, \(t\) is in seconds and \({\hat{i},\hat{j}}\) denotes unit vectors along \({x}\) and \({y}\text-\)directions, respectively. Which one of the following statements is wrong for the motion of the particle?
| 1. | Acceleration is along \((\text{-}\vec R )\). |
| 2. | Magnitude of the acceleration vector is \(\frac{v^2}{R}\), where \(v\) is the velocity of the particle. |
| 3. | Magnitude of the velocity of the particle is \(8\) m/s. |
| 4. | Path of the particle is a circle of radius \(4\) m. |
Subtopic: Circular Motion |
61%
From NCERT
NEET - 2015
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A particle moves in a circle of radius \(5\) cm with constant speed and time period \(0.2\pi\) s. The acceleration of the particle is:
| 1. | \(25\) m/s2 | 2. | \(36\) m/s2 |
| 3. | \(5\) m/s2 | 4. | \(15\) m/s2 |
Subtopic: Circular Motion |
80%
From NCERT
AIPMT - 2011
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A particle moves in the \((x\text-y)\) plane according to the rule \(x = a \sin (\omega t)\) and \(y = a \cos (\omega t)\). The particle follows:
| 1. | a circular path. |
| 2. | a parabolic path. |
| 3. | a straight line path inclined equally to x and y-axes. |
| 4. | an elliptical path. |
Subtopic: Circular Motion |
77%
From NCERT
AIPMT - 2010
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