The number of significant figures in the numbers \(25.12,\) \(2009,\) \(4.156\) and \(1.217\times 10^{-4}\) is:

1. | \(1\) | 2. | \(2\) |

3. | \(3\) | 4. | \(4\) |

Subtopic: Â Significant Figures |

Â 92%

From NCERT

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In which of the following, the number of significant figures is different from that in the others?

1. | \(2.303~\text{kg}\) | 2. | \(12.23~\text{m}\) |

3. | \(0.002\times10^{5}~\text{m}\) | 4. | \(2.001\times10^{-3}~\text{kg}\) |

Subtopic: Â Significant Figures |

Â 89%

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 84%

From NCERT

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Which of the following measurements is the most precise?

1. 5.00 mm

2. 5.00 cm

3. 5.00 m

4. 5.00 km

Subtopic: Â Significant Figures |

Â 78%

From NCERT

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If \(97.52\) is divided by \(2.54\), the correct result in terms of significant figures is:

1. | \( 38.4 \) | 2. | \(38.3937 \) |

3. | \( 38.394 \) | 4. | \(38.39\) |

Subtopic: Â Significant Figures |

Â 74%

From NCERT

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A thin wire has a length of \(21.7~\text{cm}\) and a radius of \(0.46~\text{mm}\). The volume of the wire to correct significant figures is:

1. | \( 0.15~ \text{cm}^3 \) | 2. | \( 0.1443~ \text{cm}^3 \) |

3. | \( 0.14~ \text{cm}^3 \) | 4. | \( 0.144 ~\text{cm}^3\) |

Subtopic: Â Significant Figures |

Â 64%

From NCERT

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The decimal equivalent of \(\frac{1}{20} \) up to three significant figures is:

1. | \(0.0500\) | 2. | \(0.05000\) |

3. | \(0.0050\) | 4. | \(5.0 \times 10^{-2}\) |

Subtopic: Â Significant Figures |

Â 69%

From NCERT

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Taking into account the significant figures, what is the value of \((9.99~\text{m}-0.0099~\text{m})\)?

1. | \(9.98\) m | 2. | \(9.980\) m |

3. | \(9.9\) m | 4. | \(9.9801\) m |

Subtopic: Â Significant Figures |

Â 70%

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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