Select Question Set:
Q. No.A tank full of water is placed in an elevator. The elevator accelerates upward. The water pressure at the bottom of the tank:
1. decreases
2. increases
3. remains unchanged
4. first increases and then decreases
Subtopic: Pressure |
78%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
If a soap bubble expands, the pressure inside the bubble:
1. is equal to the atmospheric pressure
2. decreases
3. increases
4. remains the same
1. is equal to the atmospheric pressure
2. decreases
3. increases
4. remains the same
Subtopic: Surface Tension |
70%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A spherical ball is dropped into a long column of a highly viscous liquid. The graph that represents the speed of the ball \((v)\) as a function of time \((t)\) is:
| 1. | \(D\) | 2. | \(A\) |
| 3. | \(B\) | 4. | \(C\) |
Subtopic: Viscosity |
73%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
The correct statement about the variation of viscosity of fluids with an increase in temperature is:
| 1. | viscosity of gases decreases. |
| 2. | viscosity of both liquids and gases increases. |
| 3. | viscosity of liquids increases. |
| 4. | viscosity of liquids decreases. |
Subtopic: Viscosity |
75%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A fluid of density \(\rho~\)is flowing in a pipe of varying cross-sectional area as shown in the figure. Bernoulli's equation for the motion becomes:
1. \(p+\dfrac12\rho v^2+\rho gh\text{ = constant}\)
2. \(p+\dfrac12\rho v^2\text{ = constant}\)
3. \(\dfrac12\rho v^2+\rho gh\text{ = constant}\)
4. \(p+\rho gh\text{ = constant}\)
Subtopic: Bernoulli's Theorem |
90%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A steel ball is dropped in a viscous liquid. The distance-time graph of the steel ball in the liquid is shown below. The terminal velocity of the ball is closest to:
1. \(0.26~\text{m/s}\)
2. \(0.33~\text{m/s}\)
3. \(0.45~\text{m/s}\)
4. \(0.21~\text{m/s}\)
1. \(0.26~\text{m/s}\)
2. \(0.33~\text{m/s}\)
3. \(0.45~\text{m/s}\)
4. \(0.21~\text{m/s}\)
Subtopic: Stokes' Law |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
A boat carrying a number of large stones is floating in a water tank. What will happen to the water level if the stones are unloaded into the water?
| 1. | the water level remains unchanged. |
| 2. | the water level falls. |
| 3. | the water level rises. |
| 4. | the water level rises till half the number of stones are unloaded and then begins to fall. |
Subtopic: Properties of Fluids |
61%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
A small spherical ball of radius \(0.1~\text{mm}\) and density \(10^{4}~\text{kg-m}^{-3}\) falls freely under gravity through a distance of \(h\) before entering a tank of water. If after entering the water, the velocity of the ball does not change and it continues to fall with the same constant velocity inside the water, then the value of \(h\) will be:
(given \(g=10~\text{m/s}^2,\) the viscosity of water \(=1.0\times10^{-5}~\text{N-sm}^{-2}\) )
1. \(15~\text m\)
2. \(25~\text m\)
3. \(20~\text m\)
4. \(10~\text m\)
(given \(g=10~\text{m/s}^2,\) the viscosity of water \(=1.0\times10^{-5}~\text{N-sm}^{-2}\) )
1. \(15~\text m\)
2. \(25~\text m\)
3. \(20~\text m\)
4. \(10~\text m\)
Subtopic: Stokes' Law |
73%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider a mercury-filled tube as shown in the figure below.
Which of the following options about the pressures at the lettered locations (\({A},\) \({B},\) \({C},\) \({D}\)) is true?
1. \(P_{B}>P_{A}>P_{C}>P_{D}\)
2. \(P_{B}=P_{C}=P_{D}>P_{A}\)
3. \(P_{B}=P_{C}=P_{D}<P_{A}\)
4. \(P_{A}=P_{B}=P_{C}=P_{D}\)
Which of the following options about the pressures at the lettered locations (\({A},\) \({B},\) \({C},\) \({D}\)) is true?
1. \(P_{B}>P_{A}>P_{C}>P_{D}\)
2. \(P_{B}=P_{C}=P_{D}>P_{A}\)
3. \(P_{B}=P_{C}=P_{D}<P_{A}\)
4. \(P_{A}=P_{B}=P_{C}=P_{D}\)
Subtopic: Pressure |
71%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
A solid wooden cube has sides of length \(a.\) The density of the wood is \(\rho.\) The cube is completely immersed in a beaker of oil, which has a density of \(\sigma.\) The top surface of the cube is horizontal. The gravitational field strength is \(g.\) What is the upward force (upthrust) on the cube due to the oil?
(Assume that no oil is absorbed by the wood.)
1. \((\sigma-\rho)a^{3}g\)
2. \(\rho a^{3}g\)
3. \(\sigma a^{3}\)
4. \(\sigma a^{3}g\)
(Assume that no oil is absorbed by the wood.)
1. \((\sigma-\rho)a^{3}g\)
2. \(\rho a^{3}g\)
3. \(\sigma a^{3}\)
4. \(\sigma a^{3}g\)
Subtopic: Archimedes' Principle |
58%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select Question Set:
© 2025 GoodEd Technologies Pvt. Ltd.