Which of the following statements is not true?
 1 The coefficient of viscosity is a scalar quantity. 2 Surface tension is a scalar quantity. 3 Pressure is a vector quantity. 4 Relative density is a scalar quantity.
Subtopic: Â Pressure |
Â 68%
From NCERT
NEET - 2023
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Two copper vessels $$A$$ and $$B$$ have the same base area but are of different shapes. $$A$$ takes twice the volume of water that $$B$$ requires to fill up to a particular common height. Then the correct statement among the following is:
1. pressure on the base area of vessels $$A$$ and $$B$$ is same.
2. pressure on the base area of vessels $$A$$ and $$B$$ is not same.
3. both vessels $$A$$ and $$B$$ weigh the same.
4. vessel $$B$$ weighs twice that of $$A$$.
Subtopic: Â Pressure |
Â 68%
From NCERT
NEET - 2022
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A barometer is constructed using a liquid (density = $$760~\text{kg/m}^3$$). What would be the height of the liquid column, when a mercury barometer reads $$76$$ cm?
(density of mercury = $$13600~\text{kg/m}^3$$)

 1 $$1.36$$ m 2 $$13.6$$ m 3 $$136$$ m 4 $$0.76$$ m

Subtopic: Â Pressure |
Â 78%
From NCERT
NEET - 2020
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In a U-tube, as shown in the figure, the water and oil are in the left side and right side of the tube respectively. The height of the water and oil columns are $$15~\text{cm}$$ and $$20~\text{cm}$$ respectively. The density of the oil is: $$\left[\text{take}~\rho_{\text{water}}= 1000~\text{kg/m}^{3}\right]$$

1. $$1200~\text{kg/m}^{3}$$
2. $$750~\text{kg/m}^{3}$$
3. $$1000~\text{kg/m}^{3}$$
4. $$1333~\text{kg/m}^{3}$$

Subtopic: Â Pressure |
Â 86%
From NCERT
NEET - 2019
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A U-tube with both ends open to the atmosphere is partially filled with water. Oil, which is immiscible with water, is poured into one side until it stands at a level of $$10~\text{mm}$$ above the water level on the other side. Meanwhile, the water rises by $$65~\text{mm}$$ from its original level (see diagram). The density of the oil is:

1. $$425~\text{kg m}^{-3}$$
2. $$800~\text{kg m}^{-3}$$
3. $$928~\text{kg m}^{-3}$$
4. $$650~\text{kg m}^{-3}$$

Subtopic: Â Pressure |
Â 72%
From NCERT
NEET - 2017
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The heart of a man pumps $$5~\text{L}$$ of blood through the arteries per minute at a pressure of $$150~\text{mm}$$ of mercury. If the density of mercury is $$13.6\times10^{3}~\text{kg/m}^{3}$$ $\mathrm{and}{}^{}$ $$g = 10~\text{m/s}^2$$, then the power of the heart in watt is:
1. $$1.70$$
2. $$2.35$$
3. $$3.0$$
4. $$1.50$$

Subtopic: Â Pressure |
Â 57%
From NCERT
NEET - 2015
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The approximate depth of an ocean is $$2700~\text{m}$$. The compressibility of water is $$45.4\times10^{-11}~\text{Pa}^{-1}$$ and the density of water is $$10^{3}~\text{kg/m}^3$$. What fractional compression of water will be obtained at the bottom of the ocean?
1. $$0.8\times 10^{-2}$$
2. $$1.0\times 10^{-2}$$
3. $$1.2\times 10^{-2}$$
4. $$1.4\times 10^{-2}$$

Subtopic: Â Pressure |
Â 69%
From NCERT
NEET - 2015
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