Mechanical Engineering Exam > Mechanical Engineering Questions > Direction : Each of the next consists of two ...
Start Learning for Free
Direction : Each of the next consists of two statements, one labelled as the 'Assertion (A)' and the other as 'Reason (R)'. You are to examine these two statements carefully and select the answers to these items using the codes given below:
Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.
Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.
Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.
- a)Both A and R are individually true and R is
the correct explanation of A - b)Both A and R are individually true but R is
not the correct explanation of A - c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Direction : Each of the next consists of two statements, one labelled ...
Explanation:
Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.
Reason (R): With an increase in elevation, the temperature of the atmospheric air increases and so the density decreases.
Correct Answer: C) A is true but R is false
Explanation:
Assertion (A) is true: When an air-filled balloon is released from the ground, it goes up and up till it reaches a certain elevation and floats in the air. This happens because of the principle of buoyancy. The balloon is filled with air, which is less dense than the surrounding air. As a result, it experiences an upward buoyant force that causes it to rise.
Reason (R) is false: The reason given in statement R is incorrect. With an increase in elevation, the temperature of the atmospheric air actually decreases, rather than increases. This is because the atmosphere becomes thinner at higher altitudes, and the air molecules are further apart. As a result, the kinetic energy (and therefore temperature) of the air molecules decreases. This decrease in temperature with an increase in elevation is known as the lapse rate.
The correct explanation for the balloon's ascent is not related to the temperature or density of the air with an increase in elevation. Instead, it is due to the principle of buoyancy. The balloon rises because the air inside it is less dense than the surrounding air, not because the density of the atmospheric air decreases with an increase in elevation.
Therefore, the correct answer is option C) A is true but R is false.
Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.
Reason (R): With an increase in elevation, the temperature of the atmospheric air increases and so the density decreases.
Correct Answer: C) A is true but R is false
Explanation:
Assertion (A) is true: When an air-filled balloon is released from the ground, it goes up and up till it reaches a certain elevation and floats in the air. This happens because of the principle of buoyancy. The balloon is filled with air, which is less dense than the surrounding air. As a result, it experiences an upward buoyant force that causes it to rise.
Reason (R) is false: The reason given in statement R is incorrect. With an increase in elevation, the temperature of the atmospheric air actually decreases, rather than increases. This is because the atmosphere becomes thinner at higher altitudes, and the air molecules are further apart. As a result, the kinetic energy (and therefore temperature) of the air molecules decreases. This decrease in temperature with an increase in elevation is known as the lapse rate.
The correct explanation for the balloon's ascent is not related to the temperature or density of the air with an increase in elevation. Instead, it is due to the principle of buoyancy. The balloon rises because the air inside it is less dense than the surrounding air, not because the density of the atmospheric air decreases with an increase in elevation.
Therefore, the correct answer is option C) A is true but R is false.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
|
Explore Courses for Mechanical Engineering exam
|
|
Top Courses for Mechanical EngineeringView all
Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
Question Description
Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Direction : Each of the next consists of two statements, one labelled as the Assertion (A) and the other as Reason (R). You are to examine these two statements carefully and select the answers to these items using the codes given below:Assertion (A): An air filled balloon released from the ground goes up and up till it reaches a certain elevation and floats in the air.Reason (R): with increase in elevation the temperature of the atmospheric air increases and so the density decreases.a)Both A and R are individually true and R isthe correct explanation of Ab)Both A and R are individually true but R isnot the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
|
|
Explore Courses for Mechanical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup