Select Chapter Topics:
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 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: Â Measurement & Measuring Devices |
Â 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: Â Measurement & Measuring Devices |
Â 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: Â Measurement & Measuring Devices |
Â 73%
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 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: Â Significant Figures |
Â 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: Â Significant Figures |
Â 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: Â Significant Figures |
Â 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: Â Significant Figures |
Â 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: Â Significant Figures |
Â 78%
From NCERT
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