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:  Dimensions |
 78%
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:  Measurement & Measuring Devices |
 84%
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:  Measurement & Measuring Devices |
 52%
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:  Measurement & Measuring Devices |
 72%
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:  Significant Figures |
 66%
From NCERT
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The area of a rectangular field (in \(\mathrm{m^2}\)) 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. \(1382.5\)
Subtopic:  Significant Figures |
 57%
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:  Significant Figures |
 71%
From NCERT
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The mass and volume of a body are \(4.237~\mathrm{g}\) and \(2.5~\mathrm{cm^3}\), respectively. The density of the material of the body in correct significant figures will be:
1. \(1.6048~\mathrm{g~cm^{-3}}\)
2. \(1.69~\mathrm{g~cm^{-3}}\)
3. \(1.7~\mathrm{g~cm^{-3}}\)
4. \(1.695~\mathrm{g~cm^{-3}}\)

Subtopic:  Significant Figures |
 84%
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:  Significant Figures |
 69%
From NCERT
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Each side of a cube is measured to be \(7.203\) \(\mathrm{m}.\) What are the total surface area and the volume respectively of the cube to appropriate significant figures?

1. \(373.7~\mathrm{m^2}\) and \(311.3~\mathrm{m^3}\)
2. \(311.3~\mathrm{m^2}\) and \(373.7~\mathrm{m^3}\)
3. \(311.2992~\mathrm{m^2}\) and \(373.7147~\mathrm{m^3}\)
4. \(373.7147~\mathrm{m^2}\) and \(311.2992~\mathrm{m^3}\)


 

Subtopic:  Significant Figures |
 77%
From NCERT
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