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You need to login to ask any Questions from chapter Thermometry of Physics-Model-Exam

Chapter:

Thermometry

1.
The most sensitive rmometer is

liquid thermometer gas thermometer radiation thermometer resistance thermometer

gas thermometer

Answer

2. The upper fix point and lower fix point of a faulty rmometer are `110^0`and `5^0`c . This rmometer give reading for actual temperature of `50^0`c is

`322,5^0`c `58.2^0`c `52.5^0c `42.5^0`c

`52.5^0c

UFP = `110^0`C

LFP = -`5^0`C

C = `50^0`C

R = ?

Now, `(R-LFP)/(UFP-LFP)=`C/100`

or, `(R+5)/(110+5)`=`50/100`

0r, R = `52.5^0`C

Hint Answer

3. Temperature of a liquid is `27^0`C n temperature in absolute scale will be

246K 273K 300K 253K

246K

A = (273+27)

K = 300K

Hint Answer

4.
The rmometer suitable for measuring rapidly charging temperature is

thermocouple thermometer gas thermometer resistance thermometer liquid thermometer

thermocouple thermometer

Answer

5.
The resistance of platinum resistance rmometer at `0^0`c and `100^0`c are 2 `ohm` & 2.5 `ohm` . The resistance will be 2.3 `ohm` at

`60^0`c `50^0`c `40^`c `30^0`c

`60^0`c

t100" role="presentation" > $\frac{t}{100}$ = 2.3-22.5-2=" role="presentation" > $\frac{2.3 - 2}{2.5 - 2} =$ `0.3/0.5`

or, t = 35" role="presentation" > $\frac{3}{5}$ x100

= 600" role="presentation" > $60^{0}$ c

Hint Answer

6.
The rmometric liquid that can measure 40^oc to 40^oc is

water alcohol mercury phenol

mercury

Answer

7. The temperature at which reading of Fahrenheit scale becomes three times reading on celcius scale

`70^0`C `80^0`C `80^0`F `(`80/3`)^0`F

`80^0`F

C = x

F = 3x

`C/100`=`(F-32)/180`

or, 9x=15x-160

or, x=`160/6` = `(`80/3`)^0`C

or, 3x = `80^0`F

Hint Answer

8. At what temperature reading on celcius scale will be half reading on fahrenheit

`120^0`C `160^0`C `160^0`F `320^0`C

`160^0`C

F = x C = `x/2`

or, `C/100`=`(F-32)/180`

or, `x/10`=`(x-32)/9`

x=`320^0`F or, `x/2`=`160^0`C

Hint Answer

9.
Four constant volume gas rmometer one should fill gas at

high temp. and high pressure high temp. and low pressure low temp and low pressure low temp and high pressure

high temp. and low pressure

Answer

10.
Two bodies will be in rmal equilibrium if y have same

specific heat heat energy temperature thermal conductivity

temperature

Answer

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Topics

This Chapter Thermometry consists of the following topics

Engineering physics objective

The most sensitive rmometer is

The upper fix point and lower fix point of a faulty rmometer are `110^0`and `5^0`c . This rmometer give reading for actual temperature of `50^0`c is

Temperature of a liquid is `27^0`C n temperature in absolute scale will be

The rmometer suitable for measuring rapidly charging temperature is

The resistance of platinum resistance rmometer at `0^0`c and `100^0`c are 2 `ohm` & 2.5 `ohm` . The resistance will be 2.3 `ohm` at

The rmometric liquid that can measure 40^oc to 40^oc is

The temperature at which reading of Fahrenheit scale becomes three times reading on celcius scale

At what temperature reading on celcius scale will be half reading on fahrenheit

Four constant volume gas rmometer one should fill gas at

Two bodies will be in rmal equilibrium if y have same

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