a new scale thermometer has its lower and upper fixed points marked at 20° and 80° respectively. if this thermometer reads 60°, its reading in celsius scale will be
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get a new scale thermometer has its lower and upper fixed points marked at 20° and 80° respectively. if this thermometer reads 60°, its reading in celsius scale will be from screen.
A faulty thermometer has its fixed points marked 5^o and 95^o . This thermometer reads the temperature of a body as 59^o . Then the correct temperature on Celsius scale is
Click here👆to get an answer to your question ✍️ A faulty thermometer has its fixed points marked 5^o and 95^o . This thermometer reads the temperature of a body as 59^o . Then the correct temperature on Celsius scale is
Question o and 95 o
. This thermometer reads the temperature of a body as 59
o
. Then the correct temperature on Celsius scale is
A48.6o
B58o
C59o
D60o Medium Open in App
Updated on : 2022-09-05
Solution Verified by Toppr
Correct option is D)
For two scales of temperature100−0 C−0 = UFP−LFP Reading −LFP
where LFP and UFP are lower and upper fixed points on the scale
∴ 100 C = 95−5 59−5 = 90 54 =0.6 ⇒C=0.6×100=60 o Video Explanation
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A faulty thermometer has its fixed points marked 5 and 95 . When this thermometer reads 68 , the correct temperature in Celsius is
A faulty thermometer has its fixed points marked 5 and 95 . When this thermometer reads 68 , the correct temperature in Celsius is
Byju's Answer Standard XII Physics
Error and Uncertainty
A faulty ther... Question
A faulty thermometer has its fixed points marked 5 and 95. When this thermometer reads 68, the correct temperature in Celsius is
A 68°C B 70°C C 66°C D 72°C Open in App Solution
The correct option is C 70°C
574.25 ∘ C C 100 = x − l o w e r f i x e d p o i n t u p p e r f i x e d p o i n t − l o w e r p o i n t = 68 − 5 95 − 5 = 63 90 = 7 10 = C = 700 10 = 70 ∘ C Suggest Corrections 35
SIMILAR QUESTIONS
Q. A faulty thermometer has its fixed points marked5 o and 95 o
. This thermometer reads the temperature of a body as
59 o
. Then the correct temperature on Celsius scale is
Q. A faulty thermometer has its fixed points marked at5 o C and 95 o C
. This thermometer reads the temperature of a body as
59 o C
. The correct value is:
Q. A faulty thermometer has its fixed points marked at6 ∘ and 96 ∘
. What is the correct temperature on the centigrade scale when this thermometer reads
87 ∘ ?
Q. A faulty thermometer has its fixed points marked5 and 95
If the temperature of a body as shown on the celcius scale is
40
then its temperature shown on this faulty thermometer is .
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Standard XII Physics
A faulty thermometer has its fixed points marked 5 and 95. If the temperature of the body as shown on the Celsius scale is 40 then its temperature shown on this faulty thermometer is.
A faulty thermometer has its fixed points marked 5 and 95. If the temperature of the body as shown on the Celsius scale is 40 then its temperature shown on this faulty thermometer is.. Ans: Hint: In the above question the faulty thermometer has its l...
A faulty thermometer has its fixed points marked 5 and 95. If the temperature of the body as shown on the Celsius scale is 40 then its temperature shown on this faulty thermometer is.
Last updated date: 13th Mar 2023
• Total views: 273k • Views today: 2.53k Answer Verified 273k+ views 2 likes
Hint: In the above question the faulty thermometer has its lower fixed point as 5 and the higher fixed point is as 95. This thermometer is divided into 100 equal divisions. In case of a Celsius scale, the scale is divided into 100 equal parts with its lower fixed point as 0 degree Celsius and its upper fixed point as 100 degree Celsius. Hence we can use the relation between two temperature scales to determine the corresponding temperature on the faulty thermometer, when the temperature on the Celsius scale is 40.Complete answer:
Both the temperature scales are divided into 100 equal divisions. Hence the relation between two above temperature scales is given by,
C−LFP UFP−LFP = F−LFP UFP−LFP
C−LFPUFP−LFP=F−LFPUFP−LFP
, where C is the measurement on the Celsius scale, F is the corresponding measurement on the faulty thermometer scale, UFP stands for the upper fixed points and LFP stands for the lower fixed points on both the scales.
Substituting the measurement taken on the Celsius scale and the UFP and LFP of both the thermometers in the above equation we get,
C−LFP UFP−LFP = F−LFP UFP−LFP 40−0 100−0 = F−5 95−5 40×90 100 =F−5 36+5=F F= 41 ∘ C
C−LFPUFP−LFP=F−LFPUFP−LFP40−0100−0=F−595−540×90100=F−536+5=FF=41∘C
Hence the corresponding reading on the faulty thermometer will be 41 degree Celsius.
Note:The above question can also be solved in a much faster way. Both the scales are divided into 100 equal divisions each. Hence for every 1 degree rise in the Celsius scale there will be 0.9 degree rise on the faulty thermometer. Hence for a temperature of 40 degree Celsius on the Celsius scale, the rise in temperature on the faulty thermometer will be
40×0.9=36 40×0.9=36
. But the faulty thermometer is calibrated such that its initial point is 5. Hence the temperature value on the faulty thermometer will be 36+5=41.
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