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:  Significant Figures |
 74%
Level 2: 60%+
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The velocity \(v\) of a particle at time \(t\) is given by \({v}={at}+\frac{{b}}{{t}+{c}}.\) The dimensions of \({a}\), \({b}\), and \({c}\) are respectively:
1. \( {\left[{LT}^{-2}\right],[{L}],[{T}]} \)
2. \( {\left[{L}^2\right],[{T}] \text { and }\left[{LT}^2\right]} \)
3. \( {\left[{LT}^2\right],[{LT}] \text { and }[{L}]} \)
4. \( {[{L}],[{LT}], \text { and }\left[{T}^2\right]}\)

Subtopic:  Dimensions |
 83%
Level 1: 80%+
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Consider a screw gauge without any zero error. What will be the final reading corresponding to the final state as shown?
It is given that the circular head translates \(P\) MSD in \({N}\) rotations. (\(1\) MSD \(=\) \(1~\text{mm}\).)

              
1. \( \left(\frac{{P}}{{N}}\right)\left(2+\frac{45}{100}\right) \text{mm} \)
2. \( \left(\frac{{N}}{{P}}\right)\left(2+\frac{45}{{N}}\right) \text{mm} \)
3. \(P\left(\frac{2}{{N}}+\frac{45}{100}\right) \text{mm} \)
4. \( \left(2+\frac{45}{100} \times \frac{{P}}{{N}}\right) \text{mm}\)

Subtopic:  Measurement & Measuring Devices |
 51%
Level 3: 35%-60%
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The main scale of a vernier calliper has \(n\) divisions/cm. \(n\) divisions of the vernier scale coincide with \((n-1)\) divisions of the main scale. The least count of the vernier calliper is:

1. \(\dfrac{1}{(n+1)(n-1)}\) cm 2. \(\dfrac{1}{n}\) cm
3. \(\dfrac{1}{n^{2}}\) cm 4. \(\dfrac{1}{(n)(n+1)}\) cm
Subtopic:  Measurement & Measuring Devices |
 53%
Level 3: 35%-60%
NEET - 2019
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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:  Significant Figures |
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Level 1: 80%+
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In an experiment, the height of an object measured by a vernier callipers having least count of \(0.01~\text{cm}\) is found to be \(5.72~\text{cm}\). When no object is there between jaws of this vernier callipers, the reading of the main scale is \(0.1\) cm and the reading of the vernier scale is \(0.3~\text{mm}\). The correct height of the object is:
1. \( 5.72 ~\text{cm} \)
2. \( 5.59~\text{cm} \)
3. \( 5.85~\text{cm} \)
4. \( 5.69~\text{cm} \)

Subtopic:  Measurement & Measuring Devices |
Level 3: 35%-60%
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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:  Significant Figures |
 63%
Level 2: 60%+
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A screw gauge has the least count of \(0.01~\text{mm}\) and there are \(50\) divisions in its circular scale. The pitch of the screw gauge is:

1. \(0.25~\text{mm}\) 2. \(0.5~\text{mm}\)
3. \(1.0~\text{mm}\) 4. \(0.01~\text{mm}\)
Subtopic:  Measurement & Measuring Devices |
 85%
Level 1: 80%+
NEET - 2020
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Taking into account the significant figures, what is the value of \((9.99~\text{m}-0.0099~\text{m})\)?
1. \(9.98~\text{m}\) 2. \(9.980~\text{m}\)
3. \(9.9~\text{m}\) 4. \(9.9801~\text{m}\)
Subtopic:  Significant Figures |
 71%
Level 2: 60%+
NEET - 2020
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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:  Significant Figures |
 64%
Level 2: 60%+
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