Tree Diagram

the probability of tree diagram can be done by using two methods. 1st and 2nd. When we deal the problems of probability that involves two or more stages, it is frequently useful to use probability tree diagram. To construct the tree diagram, the probababity written on each branch of the tree. The probability of an event for the experiment

Summary

the probability of tree diagram can be done by using two methods. 1st and 2nd. When we deal the problems of probability that involves two or more stages, it is frequently useful to use probability tree diagram. To construct the tree diagram, the probababity written on each branch of the tree. The probability of an event for the experiment

Things to Remember

To construct the tree diagram, the probability written on each branch of the tree. The probability of an event for the experiment description by a tree is the product of the probabilities attached to the branches along the path representing the event. A tree diagram is the best way of finding events of a sample space with the help of a diagram.

 

MCQs

No MCQs found.

Subjective Questions

Q1:

What are the effects of heat?


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>The effects of heat are as follows,</p>
<ol>
<li>It increases the volume of a body.</li>
<li>It increases the temperature of a body.</li>
<li>It changes the state of the body.</li>
<li>It changes the solubility of a body.</li>
</ol>

Q2:

What do you mean by transmission of heat? Write down the types of transmission of heat.


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>The transfer of heat energy from the body at a higher temperature to the body at a lower temperature is called transmission of heat. There are three types of transmission of heat, which are as follows,</p> <ol><li>Conduction</li> <li>Convection, and</li> <li>Radiation.</li> </ol>

Q3:

Write any four disadvantages of using alcohol instead of mercury in a thermometer.


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>Any four advantages of using alcohol instead of mercury in a thermometer are as follows,</p> <ol><li>It is a bad conductor of heat.</li> <li>Since it is a colorless, so it should be colored before use.</li> <li>It has low density.</li> <li>Its expansion rate is not uniform.</li> </ol>

Q4:

Write any four advantages of the use of mercury in a thermometer.


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>Any four advantages of the use of mercury in thermometer are as follows,</p> <ol><li>It is a good conductor of heat.</li> <li>It has uniform rate of contraction and expansion.</li> <li>It can be easily seen in the capillary tube as it is a silvery white liquid.</li> <li>It has very high density. So, a small bulb of a thermometer can contain much mercury.</li> </ol>

Q5:

Write any three advantages of using alcohol as a thermometric liquid.


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>Any four advantages of using alcohol as a thermometric liquid are as follows,</p> <ol><li>It can measure very low temperature, as its freezing point is -117 degree Celsius.</li> <li>It is cheaper than mercury.</li> <li>The expansion rate of mercury is six times more than that of mercury. So, it is more sensitive liquid.</li> </ol>

Q6:

Define radiation with examples.


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>Radiation can be defined as the transmission of heat from the body at higher temperature to the body at lower temperature without affecting the medium.<br> Examples: During winter season, we feel hot when sun shines.<br> We feel warm when we sit near the fire.</p>

Q7:

Define good conductor and bad conductor with two examples of each.


Type: Short Difficulty: Easy

Show/Hide Answer
Answer: <p>Those substances, which conduct heat, are called good conductors. Copper and silver are the examples of good conductor. The substances, which do not conduct heat easily, are called bad conductors. Plastic and wood are the examples of bad conductors.</p>

Q8:

What are the differences between heat and temperature?


Type: Long Difficulty: Easy

Show/Hide Answer
Answer: <p>&nbsp;</p>
<table width="635">
<tbody>
<tr>
<td width="318">
<p><strong>Heat</strong></p>
</td>
<td width="318">
<p><strong>Temperature</strong></p>
</td>
</tr>
<tr>
<td width="318">
<p>Heat is a form of energy which gives the sensation of warmth.</p>
</td>
<td width="318">
<p>The degree of hotness or coldness of a body is called temperature.</p>
</td>
</tr>
<tr>
<td width="318">
<p>It is measured by the calorimeter.</p>
</td>
<td width="318">
<p>It is measured by the thermometer.</p>
</td>
</tr>
<tr>
<td width="318">
<p>Its SI unit is Joule.</p>
</td>
<td width="318">
<p>Its SI unit is Kelvin</p>
</td>
</tr>
</tbody>
</table>

Q9:

What are the differences between Convection and Conduction?


Type: Long Difficulty: Easy

Show/Hide Answer
Answer: <p>The differences between convection and conduction are given below,</p>
<table width="641">
<tbody>
<tr>
<td width="321">
<p><strong>Convection</strong></p>
</td>
<td width="321">
<p><strong>Conduction</strong></p>
</td>
</tr>
<tr>
<td width="321">
<p>It is the transmission of heat by the actual movement of molecules of a medium.</p>
</td>
<td width="321">
<p>It is the transmission of heat without the actual movement of molecules of a medium.</p>
</td>
</tr>
<tr>
<td width="321">
<p>It takes place in liquid and gas.</p>
</td>
<td width="321">
<p>It takes place in solid only.</p>
</td>
</tr>
<tr>
<td width="321">
<p>Example: heating water on a stove.</p>
</td>
<td width="321">
<p>Example: One end of the iron rod becomes hot when its other end is heated.</p>
</td>
</tr>
</tbody>
</table>

Q10:

What are the differences between thermo flasks and thermometer?


Type: Long Difficulty: Easy

Show/Hide Answer
Answer: <p>The differences between thermo flasks and thermometer are as follows,</p>
<table width="639">
<tbody>
<tr>
<td width="324">
<p><strong>Thermo flasks</strong></p>
</td>
<td width="316">
<p><strong>Thermometer</strong></p>
</td>
</tr>
<tr>
<td width="324">
<p>It is used to preserve the temperature of the liquid for several hours.</p>
</td>
<td width="316">
<p>It is used to measure the temperature of the body.</p>
</td>
</tr>
<tr>
<td width="324">
<p>It is not filled with mercury or alcohol.</p>
</td>
<td width="316">
<p>It is either filled with mercury or alcohol.</p>
</td>
</tr>
<tr>
<td width="324">
<p>James Dewar invented it in 1890 AD.</p>
</td>
<td width="316">
<p>Galileo invented it in 1592 AD.</p>
</td>
</tr>
</tbody>
</table>
<p>&nbsp;</p>

Q11:

What are the differences between conductors and insulators?


Type: Long Difficulty: Easy

Show/Hide Answer
Answer: <p>The differences between conductors and insulators are given below,</p>
<table width="651">
<tbody>
<tr>
<td width="326">
<p><strong>Conductors</strong></p>
</td>
<td width="326">
<p><strong>Insulators</strong></p>
</td>
</tr>
<tr>
<td width="326">
<p>It conducts heat and electricity.</p>
</td>
<td width="326">
<p>It does not conduct heat and electricity.</p>
</td>
</tr>
<tr>
<td width="326">
<p>It can conduct heat and electricity due to the free electrons present in it.</p>
</td>
<td width="326">
<p>It cannot conduct the heat and electricity due to the absence of free electrons.</p>
</td>
</tr>
<tr>
<td width="326">
<p>Examples: copper and silver</p>
</td>
<td width="326">
<p>Examples: plastics and wood</p>
</td>
</tr>
</tbody>
</table>

Q12:

What are the differences between convection and radiation?


Type: Long Difficulty: Easy

Show/Hide Answer
Answer: <p>The differences between convection and radiation are as follows,</p>
<table width="647">
<tbody>
<tr>
<td width="324">
<p><strong>Convection</strong></p>
</td>
<td width="324">
<p><strong>Radiation</strong></p>
</td>
</tr>
<tr>
<td width="324">
<p>It is the transmission of heat by the actual movement of molecules of a medium.</p>
</td>
<td width="324">
<p>It is the transmission of heat from the hot body to a cold body without affecting the medium.</p>
</td>
</tr>
<tr>
<td width="324">
<p>It requires a medium.</p>
</td>
<td width="324">
<p>It does not require medium</p>
</td>
</tr>
<tr>
<td width="324">
<p>Example: heating water on a stove.</p>
</td>
<td width="324">
<p>Example: we feel hot when the sun shines.</p>
</td>
</tr>
</tbody>
</table>

Q13: Define heat.
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: Heat is a form of energy which causes the sensation of warmth or coldness.

Q14: What is transmission of heat?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: The flow of heat energy from a body at a higher temperature to another body at lower temperature is called transmission of heat.

Q15: Define conduction.
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: Conduction is defined as the transfer of heat from one particle to another without the actual movement of the particles.

Q16: What is the main source of heat energy?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: The sun is the main source of heat energy.

Q17: What are the three modes of transmission of heat?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: The three modes of transmission of heat are conduction, convection and radiation.

Q18: Define convection.
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: Convection is defined as the transfer of heat by the actual movement of molecules of a medium.

Q19: Define radiation.
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: Radiation is defined as the transmission of heat from a hot body to a cold body without affecting the medium.

Q20:

What is temperature?


Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: <p>The degree of hotness or coldness of a body is called temperature.</p>

Q21: Which device is used to measure the temperature of a body?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: Thermometer is used to measure the temperature of a body.

Q22: What is thermos flask?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: It is a device that keeps hot liquids hot and cold liquids cold for several hours is called a thermo flask.

Q23:

What do you mean by convection of air?


Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: <p>The movement of hot and light air upward and heavy air downwards is called convection of air.</p>

Q24: What is the principle of thermometer?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: Thermometer is constructed on the principle that fluids expand on heating and contract on cooling.

Q25: What is the freezing point of mercury?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: The freezing point of mercury is -39 degree celcius.

Q26: What is the boiling point of mercury?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: The boiling point of mercury is 357 degree celcius.

Q27: What is the freezing point of alcohol?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: The freezing point of alcohol is -117 degree celcius.

Q28: What is the boiling point of alcohol?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: The boiling point of alcohol is 78 degree celcius.

Q29: Why mercury thermometer cannot be used to measure very low temperature?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: Mercury thermometer cannot measure the temperature below -39 degree celcius so it cannot be used to measure very low temperature.

Q30: Who invented thermo flask?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: Thermo flask was invented by James Dewar, a British scientist in 1890 A.D.

Q31: What is clinical thermometer?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: The thermometer used by doctors to measure the temperature of our body during high fever is called clinical thermometer.

Q32: What do you mean by thermometric liquid?
Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: The liquid which are filled inside the bulb of a thermometer are called thermometric liquid.

Videos

Heat
Thermometer
Thermos flask
Tree Diagram

Tree Diagram

When we deal the problem of probability that involves two or more stages, it is frequently useful to use probability tree diagram. To construct the tree diagram, the probability written on each branch of the tree. The probability of an event for the experiment description by a tree is the product of the probabilities attached to the branches along the path representing the event. A tree diagram is the best way of finding events of a sample space with the help of a diagram.

For example:
Tossing three coins simultaneously, the probability tree diagram can be shown as below.

DF

Second way of tree diagram

DCFV

Sample space S = {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}

Lesson

Probability

Subject

Compulsory Mathematics

Grade

Grade 10

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