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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ९

Assertion (A): 0 °C = 273.16 K. For our convenience we take it as 273 K after rounding off the decimal. Reason (R): To convert a temperature on the Celsius scale we have to add 273 to - Science

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प्रश्न

Assertion (A): 0 °C = 273.16 K. For our convenience we take it as 273 K after rounding off the decimal.

Reason (R): To convert a temperature on the Celsius scale we have to add 273 to the given temperature.

विकल्प

  • Both A and R are true but R is not the correct reason.

  • Both A and R are true and R is the correct reason.

  • A is true but R is false.

  • A is false but R is true.

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उत्तर

Both A and R are true and R is the correct reason.

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Measurement - Exercise [पृष्ठ १२]

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सामाचीर कलवी Science [English] Class 9 TN Board
अध्याय 1 Measurement
Exercise | Q V. 2. | पृष्ठ १२

संबंधित प्रश्न

Write down the temperature of upper fixed point,, on the Fahrenheit scale.


Two bodies at different temperatures are placed in contact. State the direction in which the heat will flow. 


State the volume changes that you will observe when a given mass of water is heated from 0°C to 10°C. Sketch a temperature-volume graph to show the behaviour. 


Fill in the blank with the correct word, from the words in option:

All the temperature on the kelvin scale are in ____ figures.


Define coefficient of volume expansion.


A copper wire 10 cm long is heated from 200C to 300C. Find the increase in length of the wire, if coefficient of linear expansion of copper is 1.7 X 10-5oC-1


State one use of each of the following type of thermometer: 
Clinical thermometer


Give a scientific reason for the following:
Old quits are less warm than the new ones.


The hot metal ball is suspended from a string in a metal box as shown in the following figure

(i) What are the ways in which the ball loses heat

(ii) Which side of the box will be the hottest and which the least hot after some time? Explain.


Water is not used as a thermometric liquid. Why?

Can we fuse an iron wire in a glass rod? Give reason to your answer.

Explain the following:
Conduction is not possible in vacuum.


The following figure shows a rectangular box with two tubes P and Q at the top. A burning candle R is placed under the tube P. The candle burns brightly.

Explain:

(i) How is the air in the box circulating?
(ii) What will happen if the opening Q is closed?


The following figure shows a container in which a lighted candle has been kept. The container has two openings, p, and Q. Which way the smoke from an external source placed near P moves when it reaches P and leaves from Q. Give a reason for your answer.


At what speed does the heat radiation travel? What path does it follow?

Who am I?

Land and water get heated due to me.


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Temperature is the average ______ of the molecules of a substance.


The temperature of boiling water is ______.


Kelvin is written as K also known as absolute scale as it starts from absolute zero temperature.


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