Due to which of the below mentioned reasons, do clouds float in the sky A. Low temperature B. Low speed C. Low pressure D. Low density?

A
D
C
B

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 2 : D

The correct answer is D.

Clouds are created when water gets heated up, evaporates, and condenses in the upper atmosphere.
The condensed form of water in the atmosphere is due to the low temperature.
As clouds have less density and high volume as compared to the air surrounding them, so the clouds experience a high buoyancy force from the surrounding air, which supports the balance of the weight of the clouds.
Buoyancy is the force due to all the air molecules below the cloud resisting any downward motion.
Therefore, the clouds float in the atmosphere because of their low density.
The objects which have less density experience high buoyancy force.

4 views Answered 2022-09-04 04:29

Related Questions

The reasons for low rate of plastic recycling are: 1. Scrap plastic has little value because virgin material is rather cheap 2. Low density of plastic leads to high shipping and handling cost 3. Recycling leads to a very severe public health hazard Which of the above reasons are correct?

1 Answers 4 Views

The following reasons are mentioned while recommending supercharging for the engines used in aeroplanes and submarines: 1) More volumetric efficiency better combustion and increased power output. 2) Higher peak pressure, increased temperature and smaller size. Which of the above reason is/are correct?

1 Answers 4 Views

In the question given below are given two statements followed by a few conclusions a option. You have to take the two given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions basically follows from the tow given statements disregarding commonly known facts. Statements: A. All rivers are clouds B. Some animals are rivers Conclusion: 1. Some rivers are animals 2. Some clouds are rivers 3. All clouds are rivers 4. All animals are clouds A. Conclusion 1 and 2 follow B. Conclusion 1, 2 and 3 follow C. Conclusion 1 and 3 follow D. Conclusion 2, 3 and 4 follow?

1 Answers 4 Views

In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. A few countries already use powerful electromagnets to build high-speed trains. P. Since maglev trains float in the air, there is no friction between the train and the track. Q. Maglev trains work on the principles of magnetism and float over a guideway. R. Maglev is the shortened form of magnetic levitation. S. These trains are called maglev trains. 6. This lack of friction and the aerodynamic design of these trains allow them to reach speeds of over 500 kilometers per hour.?

1 Answers 4 Views

Cavitation is likely to occur if 1. Pressure becomes very high. 2. Temperature becomes low. 3. Pressure at the specific point falls below vapour pressure. 4. Energy is released with the onset of a high intensity wave due to noise and vibration of the machine. Which of the above statements are correct?

1 Answers 4 Views

Consider the following statements: 1. In an Impulse turbine, the pressure of the flowing water remains un- changed and is equal to atmospheric Pressure. 2. In Impulse turbines, the water impinges on the buckets with ‘Pressure energy’. 3. In a Reaction turbine, the pressure of the flowing water remains un- changed and is equal to atmospheric pressure. Which of the above statements is/are correct?

1 Answers 4 Views

Which of the given conclusion logically follows from the two given statements (disregarding commonly known facts) Statements: I. Some spices are clouds. II. Very few cars are spices. Conclusions: I. Some clouds are cars. II. All clouds are cars.?

1 Answers 4 Views

In the case of the design of friction clutches, the uniform rate of wear theory is used over uniform pressure. The reasons may be the following: 1. It gives lower frictional torque. 2. It gives higher frictional torque. 3. The intensity of pressure is maximum at the inner radius and minimum at the outer radius of the friction or contact surfaces. 4. This concept is prevalent for running and old clutches. Which of the above reasons is correct?

1 Answers 4 Views

Consider the following statements regarding the ends of the pressure vessels flanged by pre-tensioned bolts: 1. Pre-tensioning helps to seal the pressure vessel. 2. Pre-tensioning reduces the maximum tensile stress in the bolts. 3. Pre-tensioning countermands the fatigue life of the bolts. 4. Pre-tensioning helps to reduce the deleterious effect of pressure pulsations in the pressure vessel. Which of the above statements are correct?

1 Answers 4 Views

In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct 1. Suddenly the man heard the low hum of an engine. P. Instead, it grew louder and louder and seemed to be coming from above. Q. At first, he thought that it must be a car travelling along the road he had recently left. R. He looked up quickly and saw an aeroplane cutting a crazy, zigzag path across the sky. S. He expected the noise to fade away in the distance. 6. It disappeared for an instant behind some clouds, then emerged and plunged into the field.?

1 Answers 4 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)