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Plane angle and solid angle have:

1. | both units and dimensions |

2. | units but no dimensions |

3. | dimensions but no units |

4. | no units and no dimensions |

Subtopic: Â Dimensions |

Â 79%

From NCERT

NEET - 2022

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The unit of length, parsec is used for the measurement of:

1. | wavelength of light |

2. | size of an atom |

3. | astronomical distance |

4. | height of a building |

Subtopic: Â Measurement & Measuring Devices |

Â 81%

From NCERT

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The angle of \(1'\) (minute of an arc) in radian is nearly equal to:

1. \(2.91 \times 10^{-4} ~\mathrm{rad} \)

2. \(4.85 \times 10^{-4} ~\mathrm{rad} \)

3. \(4.80 \times 10^{-6} ~\mathrm{rad} \)

4. \(1.75 \times 10^{-2} ~\mathrm{rad}\)

Subtopic: Â Measurement & Measuring Devices |

Â 53%

From NCERT

NEET - 2020

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The angle of \(1^\circ\) (degree) will be equal to:

(Use \(360^\circ=2\pi\) rad)

1. \(1.034\times10^{-3}\) rad

2. \(1.745\times10^{-2}\) rad

3. \(1.524\times10^{-2}\) rad

4. \(1.745\times10^{3}\) rad

Subtopic: Â Measurement & Measuring Devices |

Â 74%

From NCERT

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The sum of the numbers \(436.32,227.2,\) and \(0.301\) in the appropriate significant figures is:

1. | \( 663.821 \) | 2. | \( 664 \) |

3. | \( 663.8 \) | 4. | \(663.82\) |

Subtopic: Â Significant Figures |

Â 67%

From NCERT

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The area of a rectangular field (in \(\text{m}^2\)) of length \(55.3\) m and breadth \(25\) m after rounding off the value, for correct significant digits is:

1. \(14\times10^{2}\)

2. \(138\times10^{1}\)

3. \(1382\)

4. \(1382.5\)

1. \(14\times10^{2}\)

2. \(138\times10^{1}\)

3. \(1382\)

4. \(1382.5\)

Subtopic: Â Significant Figures |

Â 60%

From NCERT

NEET - 2022

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The radius of a circle is stated as \(2.12\) cm. Its area should be written as:

1. | \(14\mathrm{~cm^2}\) | 2. | \(14.1\mathrm{~cm^2}\) |

3. | \(14.11\mathrm{~cm^2}\) | 4. | \(14.1124\mathrm{~cm^2}\) |

Subtopic: Â Significant Figures |

Â 71%

From NCERT

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The mass and volume of a body are \(4.237~\text{grams}\) and \(2.5~\text{cm}^3\), respectively. The density of the material of the body in correct significant figures will be:

1. \(1.6048~\text{grams cm}^{-3}\)

2. \(1.69~\text{grams cm}^{-3}\)

3. \(1.7~\text{grams cm}^{-3}\)

4. \(1.695~\text{grams cm}^{-3}\)

Subtopic: Â Significant Figures |

Â 85%

From NCERT

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The numbers \(2.745\) and \(2.735\) on rounding off to \(3\) significant figures will give respectively,

1. | \(2.75\) and \(2.74\) | 2. | \(2.74\) and \(2.73\) |

3. | \(2.75\) and \(2.73\) | 4. | \(2.74\) and \(2.74\) |

Subtopic: Â Significant Figures |

Â 69%

From NCERT

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Each side of a cube is measured to be \(7.203~\text{m}\). What are the total surface area and the volume respectively of the cube to appropriate significant figures?

1. | \(373.7~\text{m}^2\) and \(311.3~\text{m}^3\) |

2. | \(311.3~\text{m}^2\) and \(373.7~\text{m}^3\) |

3. | \(311.2992~\text{m}^2\) and \(373.7147~\text{m}^3\) |

4. | \(373.7147~\mathrm{m^2}\) and \(311.2992~\text{m}^3\) |

Subtopic: Â Significant Figures |

Â 78%

From NCERT

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