Physics and Measurement (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 12  19 of 62
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Question number: 12
» Physics and Measurement » Errors in Measurement
Question
Error in the measurement of radius of a cylinder is 4%. The error in the calculated value of its volume is
Choices
Choice (4)  Response  

a.  8% 

b.  5% 

c.  3% 

d.  7% 

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Question number: 13
» Physics and Measurement » Errors in Measurement
Question
Error in the measurement of radius of a sphere is 1%. The error in the calculated value of its volume is
Choices
Choice (4)  Response  

a.  3 % 

b.  5% 

c.  7% 

d.  1 % 

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Question number: 14
» Physics and Measurement » Errors in Measurement
Question
A thin copper wire of length/metre increases in length by 2 % when heated through 10°C. Which is not the percentage increase in area when a square copper sheet of length/metre is heated through 10°C?
Choices
Choice (4)  Response  

a.  14% 

b.  16% 

c.  12% 

d.  4% 

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Passage
The internal radius of a 1 m long resonance tube is measured as 3 cm. A tuning fork of frequency 2000 Hz is used. The first resonating length is measured as 4.6 cm and the second resonating length is measured as 14.0 cm.
Question number: 15 (1 of 3 Based on Passage) Show Passage
» Physics and Measurement » Errors in Measurement
Question
Calculate the maximum percentage error in measurement of e.
Choices
Choice (4)  Response  

a.  3.33% 

b.  4.33% 

c.  2.23% 

d.  5.33% 

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Question number: 16 (2 of 3 Based on Passage) Show Passage
» Physics and Measurement » Errors in Measurement
Question
Calculate the speed of sound at the room temperature.
Choices
Choice (4)  Response  

a.  275 m/s 

b.  330 m/s 

c.  376 m/s 

d.  356 m/s 

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Question number: 17 (3 of 3 Based on Passage) Show Passage
» Physics and Measurement » Errors in Measurement
Question
Calculate the end correction.
Choices
Choice (4)  Response  

a.  0.3 cm 

b.  0.4 cm 

c.  0.2 cm 

d.  0.1 cm 

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Question number: 18
» Physics and Measurement » Dimensions of Physical Quantities
Question
In the relation , P is pressure, Z is the distance, k is Boltzmann constant and θ is the temperature. The dimensional formula of β will be
Choices
Choice (4)  Response  

a.  [M ^{0} L ^{2} T ^{1}] 

b.  [M ^{1} L ^{2} T ^{1}] 

c.  [M ^{1} L ^{0} T ^{1}] 

d.  [M ^{0} L ^{2} T ^{0}] 

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Question number: 19
» Physics and Measurement » Technology and Society
Assertion (Ꭺ)
Parallax method cannot be used for measuring distances of stars more than 100 light years away.
Reason (Ꭱ)
Because parallax angle reduces so much that it cannot be measured accurately.
Choices
Choice (4)  Response  

a.  Both Ꭺ and Ꭱ are false 

b.  Ꭺ is false but Ꭱ is true 

c.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ 

d.  Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ 

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