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Free tnpsc model questions Online Test - MeritNotes

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No. of Questions :10

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1. Relation between the colour and the temperature of a star is given by

(a)
Hippacrus rule
(b)
Hubble’s law
(c)
Planck’s law
(d)
Wean’s displacement law

2. SI unit of temperature is

(a)
Fahrenheit
(b)
Joule
(c)
Kelvin
(d)
Celsius

3. Which of the following is the example of ideal black body?

(a)
A pin hole box
(b)
Black board
(c)
Kajal
(d)
None of these

4. If a substance contracts on heating , its co-efficient of linear expansion is

(a)
+ ve
(b)
– ve
(c)
Zero
(d)
Infinity

5. Heat given to ideal gas under isothermal conditions is used

(a)
In doing external work
(b)
Increasing the temperature
(c)
In increasing the internal energy
(d)
None of the above

6. At dew point RH is

(a)
0%
(b)
100%
(c)
50%
(d)
25%

7. A metal sheet with circular hole is heated. The hole will

(a)
Remain unaffected
(b)
Contract
(c)
Expand
(d)
None of these

8. A fan produces a feeling of comfort during hot weather because

(a)
Conductivity of air increases
(b)
Our body radiates more heat in air
(c)
Our perspiration evaporates rapidly
(d)
Fan supplies cold air

9. The amount of heat required to raise the temperature of a body through 1k is called, its

(a)
Water equivalent
(b)
Entropy
(c)
Thermal capacity
(d)
Specific heat

10. The temperature of the sun is measured with

(a)
Vapour pressure thermometer
(b)
Gas thermometer
(c)
Pyrometer
(d)
Platinum thermometer

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