मराठी

Can there be a time-temperature graph as follows? Justify your answer.

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प्रश्न

Can there be a time-temperature graph as follows? Justify your answer.

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उत्तर

This can be a time-temperature graph, as the same temperature at different times is possible.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 13: Introduction to Graphs - EXERCISE 13.1 [पृष्ठ १६३]

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एनसीईआरटी Mathematics [English] Class 8
पाठ 13 Introduction to Graphs
EXERCISE 13.1 | Q 7. (iv) | पृष्ठ १६३

संबंधित प्रश्‍न

For an experiment in Botany, two different plants, plant A and plant B were grown under similar laboratory conditions. Their heights were measured at the end of each week for 3 weeks. The results are shown by the following graph.

  1. How high was Plant A after (i) 2 weeks (ii) 3 weeks?
  2. How high was Plant B after (i) 2 weeks (ii) 3 weeks?
  3. How much did Plant A grow during the 3rd week?
  4. How much did Plant B grow from the end of the 2nd week to the end of the 3rd week?
  5. During which week did Plant A grow most?
  6. During which week did Plant B grow least?
  7. Were the two plants of the same height during any week shown here? Specify.

Use the tables below to draw linear graphs.

Population (in thousands) of men and women in a village in different years.

Year 2003 2004 2005 2006 2007
Number of men 12 12.5 13 13.2 13.5
Number of women 11.3 11.9 13 13.6 12.8 

A courier-person cycles from a town to a neighboring suburban area to deliver a parcel to a merchant. His distance from the town at different times is shown by the following graph.

  1. What is the scale taken for the time axis?
  2. How much time did the person take for the travel?
  3. How far is the place of the merchant from the town?
  4. Did the person stop on his way? Explain.
  5. During which period did he ride fastest?

Can there be a time-temperature graph as follows? Justify your answer.


The runs scored by a cricket team in first 15 overs are given below:

Overs: I II III IV V VI VII VIII IX X XI XII XIII XIV XV
Runs: 2 1 4 2 6 8 10 21 5 8 3 2 6 8 12

Draw the graph representing the above data in two different ways as a graph and as a bar chart.


The given graph describes the distances of a car from a city P at different times when it is travelling from City P to City Q, which are 350 km apart. Study the graph and answer the following:
(i) What information is given on the two axes?
(ii) From where and when did the car begin its journey?
(iii) How far did the car go in the first hour?
(iv) How far did the car go during (i) the 2nd hour? (ii) the 3rd hour?
(v) Was the speed same during the first three hours? How do you know it?
(vi) Did the car stop for some duration at any place? Justify your answer.
(vii) When did the car reach City Q?

Find out from the growth chart

  • What could be the length of this plant on the 14th day? Guess.

A line graph can also be a whole unbroken line.


Study the given graph and complete the corresponding table below.


The following graph shows the change in temperature of a block of ice when heated. Use the graph to answer the following questions:

  1. For how many seconds did the ice block have no change in temperature?
  2. For how long was there a change in temperature?
  3. After how many seconds of heating did the temperature become constant at 0°C?
  4. What was the temperature after 25 seconds?
  5. What will be the temperature after 1.5 minutes? Justify your answer.


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