Is π an irrational number?

Is π rational or irrational? A number which can be expressed in the form of a fraction is called a rational number, where the denominator is not equal to zero. A number which cannot be expressed in the form of a fraction is called an irrational number, where the denominator is not equal to zero. A π is an irrational number because it cannot be expressed in the fraction of two integers. It has no accurate decimal value. π has non-terminating and non-repeating decimal expansion. The value of π is 3.14……..

Use Akshara app for getting good marks in SSLC and CBSE X standard.

20 tips for effective revision

The word “Revise” means “reread”. Its literal meaning is to read again something that you have read at least once before you revise. The word revise is lost in students who read a night before the exam, yet get through the exam with better results when compared to the ones who revise at regular intervals. What is the reason behind this? The key lies in revising effectively. Revision is like the twofold wrap. Primarily, it helps to remember concepts, images, and processes. Secondarily, if done effectively it boosts your confidence and makes you fearless. Akshara app
helps through MCQ's, Flashcards to revise. 

Debunking Public Myths on COVID-19 – A Pandemic

Since late 2019 and the beginning of the year 2020, the world has been suffering from an ongoing pandemic; COVID-19 caused by SARS-CoV-2. People of India and other parts of the world are experiencing worldwide shutdowns and region-wise lockdowns.

What is more interesting amid COVID-19 is the reconstruction of nature.

• Endangered species being spotted at various places
• Reduction in air pollution
• Reduced vibrations on the earth

“Corona, quarantine, masks, 6 ft distance from each other”, these are currently the trending words. In the midst of all these, we also experience traffic in google search, as people all around the world are curious to know about the serious effects of the ongoing pandemic and work from home.It is advised that one believes in the facts and takes appropriate measures rather on MYTHS.

COVID-19 is the name of the disease and not of the virus.

COVID–19, previously known as “2019 Novel coronavirus” is a disease caused by the virus SARS-CoV-2 (Severe acute respiratory syndrome coronavirus 2). Like for any other viral disease, the virus and the disease are named by different names. 

COVID-19 is the acronym of “Coronavirus disease 2019”. The virus is termed ‘Novel’ as it’s a new virus. It began with an animal population, got transmitted to humans and presently can be transmitted from human to human. Our immune system has not encountered this strain of virus before, therefore we have not developed immunity. 

COVID-19 cannot be prevented by exposing oneself to high temperatures (more than 25 °C) or living in hot climate regions.

Countries with hot weather have reported COVID-19 cases. Therefore, you can still catch COVID-19 no matter how sunny or hot the weather is. 

If the virus can sustain in the normal average body temperature of 37 °C inside humans, then it is evident that it survives in higher temperatures. Again, hot baths are not going to work. 

“Adopt protective measures by washing your hands frequently and thoroughly and avoid touching your eyes, mouth, and pricking your nose.”

Staying in cold and snow regions cannot protect you from contacting the SARS-CoV-2. 

There is no evidence to prove that cold weather can destroy the coronavirus. The normal human body temperature remains within the range of 36.5 °C to 37 °C, regardless of the external temperature or weather. 

“WHO advises people of all ages to take steps to protect themselves from the virus, for example by following good hand hygiene and good respiratory hygiene.”

People of all age groups can be infected by the coronavirus.

COVID-19 infection is not specific to age. Older people and people with pre-existing medical conditions (such as asthma, diabetes, heart disease) appear to be more vulnerable to becoming severely ill with the virus.

People infected with COVID-19 need not live with it forever. Individuals can recover from COVID-19.
If you contact the disease, make sure you treat your symptoms. If you have a cough, fever, and difficulty breathing, seek medical care early – but call your health facility by telephone first. Most patients recover thanks to supportive care.

The ability to hold your breath for 10 seconds or more without coughing or feeling of discomfort does not mean you are free from COVID-19.

Signs and symptoms may appear 2 – 14 days after exposure to the coronavirus.
The most common symptoms of COVID-19 are dry cough, tiredness, and fever. Some people may develop more severe forms of the disease, such as pneumonia. The best way to confirm if you have the virus-producing COVID-19 disease is with a laboratory test. You cannot confirm it with such breathing exercise. Holding your breath for 10 seconds can even be dangerous.

Consumption of alcohol does not protect you from contacting COVID-19.

Consuming alcohol can increase your risk of health problems and overdose is fatal.

Agents like mosquitoes and other insects cannot transmit the COVID-19.

COVID-19  mostly spreads through droplets produced when infected people sneeze or cough and by touching contaminated surfaces.
It’s easy to think of mosquitoes as tiny flying dirty syringes transferring droplets of infected blood from person to person. The reality is far more complex. When a mosquito bites and sucks up some blood that contains a virus, the virus quickly ends up in the gut of the insect. From here the virus may start utilising the nutrients and multiply or it may perish in the gut depending upon its genetic makeup.

“There is no evidence for COVID-19 infection being transmitted through agents like mosquitoes.”

Placing your hands under dryers will not prevent you from contacting the COVID-19 infection.

To protect yourself against the coronavirus, you should frequently clean your hands with an alcohol-based hand sanitizer or wash them with soap and water, at least for 20 seconds.
Once your hands are cleaned, you should dry them thoroughly by using tissues or a warm air dryer.

Spraying alcohol or chlorine all over the body may not destroy the coronavirus present inside your body.

Inhalation of chlorine gas/aerosols causes eye, nose and throat irritation, burning sensations, and sneezing. They also cause skin irritation. High exposure to chlorine may lead to nausea and vomiting.

Alcohol breaks down the immune system in the lungs, making them more susceptible for infections. It can also cause life-threatening acute respiratory distress syndrome (ARDS).

Eating garlic and drinking jeera water is not an alternative for Corona vaccines or treatment of the same.

Garlic is a healthy food that may have some antimicrobial properties. However, there is no evidence from the current outbreak that eating garlic has protected people from the new coronavirus. Jeera water is only an immunity-boosting drink. 
Vaccines for COVID-19 are under development.

People are dependent on vaccines rather than antibiotics to prevent and treat COVID-19 patients.

Antibiotics work only against bacterial diseases. And we know COVID-19 is a viral disease. 
However, antibiotics are used to treat infected patients because bacterial co-infection is possible.

“There are no vaccines produced against coronavirus. The virus is so new and different that it needs its own vaccine. Researchers are trying to develop a vaccine against 2019-nCoV, and WHO is supporting their efforts.”

Although there are no effective vaccines against 2019-nCoV as of now, general vaccinations against respiratory illnesses are advised to protect your health.

Why do plants bend towards the light?

Have you ever wondered why the money plant in your house turns more towards the light source? It is a type of tropic movement observed in plants. Tropic movements are the movements of plants in response to environmental stimuli. The phenomenon of growing towards light is called phototropism.


Tropic movements of plants differ from the nastic movements of plants. In tropic movements, growth occurs towards the stimuli, however, in nastic movements, the plant moves away from the stimuli. Hormones are responsible for tropic movements, whereas nastic movements are due to turgor pressure.

WHY AKSHARA FOR NURSING?

Content prepared by referring to the books prescribed by the examination board

Tools like Flashcards, Quiz, and Image Bank for easy assimilation of concepts

Acronyms and Mnemonics throughout the app for easy memorization

Guidelines for developing answers and remembering images

Exhaustive Question Bank with answers

HOW TO LEARN USING AKSHARA?

Summary

Extract of the sub-chapter from EXAM perspective

Easy to understand and absorb

Attractive and engaging format

Page design with nice typography, visuals in a friendly format for better understanding

Definitions, Comparisons, Images, Mnemonics, Worked examples, Concept maps, Clinical facts, Microscopic structures, Processes

Flashcards

Learning drills for memorization and recall

Exhaustive coverage from EXAM perspective

Concepts, Formulas, Equations, Diagrams, Symbols/Signs, Mnemonics, Abbreviations, Images, Rules, and Application of concepts and formulas

About 20 to 30 minutes to review all the cards in a chapter

Quiz

Test conceptual understanding, comprehension, and critical thinking
Coverage - from EXAM perspective
Concepts, Formulas, Equations, Diagrams, Application of Concepts and Formulas, Rules, Symbols/Signs
Solution explained for each question

Question Bank

Comprehensive set of questions and answers from EXAM perspective

Questions are classified based on marks

Exhaustive coverage of the chapter

Indicators for critical points to be covered as part of the answers

Answers represented in the form of charts, diagrams, tables with clear headers/titles

Covers clinical aspects

Image Bank

Captioned Images with description

Revise at subject or chapter level

Both understanding and exam-oriented diagrams for last-minute revision

Easy to navigate and search through thumbnail/preview

Model Question Papers

Experience exams before the real exam

Papers prepared by experts with many years of experience in setting papers

Subject/Paperwise Solved Model Papers

How to Overcome the Fear of Maths

Maths is the base for many scientific and technological discoveries. It is one of the oldest subjects and is constantly being rejuvenated. Many of the other subjects are dependent on maths. Maths is all around us and has an important role in our life. Right from a farmer, cook, doctor or a mechanic-everyone needs maths in their day-to-day life.

But thinking of maths gives most people jitters, they get sweaty and their heart beats faster. It’s fair to say maths is not everyone’s favorite subject. In fact, for many people, the feelings of tension and anxiety that arise when trying to solve a mathematical problem can be like hell. This is known as maths anxiety and this feeling of being a failure at maths can affect people’s minds badly.

For those who suffer from maths anxiety, it can be difficult to shift from a mindset of a failure to a more positive outlook when it comes to dealing with numbers. That is how, for many people, maths anxiety can become a lifelong issue.

Students usually tend to inculcate fear of maths because of lack of confidence, lack of knowledge in basics, not understanding the concept properly, not studying the formulae, etc.

Here are some tips to overcome the fear of maths

1. Don’t be scared to learn formulae

Learning formulae is very important. So, make a note of all the formulas and go through them anytime and anywhere.

2. Identify and accept the fear

If we are afraid of anything we have to admit it because just accepting the fear does not make you a failure. But not taking care of that fear may affect your life. Find the cause of the failure and work on it. Continuous hard work leads to success.

3. Do not try to mug up the things

Maths should never be confused with other subjects where mugging is required. Do not byheart the formulae or solutions, try to understand the procedure and then solve the problem.

4. Do not read maths

Do not sit and read maths like any other theory subjects. Sit and solve all the problems from the textbook.

5. Ask questions when you do not understand

If you do not understand the concept or any problem, get your doubts cleared by a teacher or your peers.

6. Do not jump directly to the solution

Always solve the problems step by step by understanding the logic of the problem. So that you avoid making mistakes. When one step is wrong, the whole problem will be wrong.

7. Practice the problems based on the concept

If one thinks they know a problem very well they should practice more on that concept and should make it a rule to do each and every problem present in the textbook.

8. Make a test plan

After practicing all the problems, write a test. The test is only to measure how well you have understood the problems, and the time taken to solve the problem.

SSLC Maths Question Paper

“Math proficiency is the gateway to a number of incredible careers that students may never have considered”

Danica Mckellar is an actress, who is also a writer and an education advocate.
She has written six non-fiction books on mathematics.
Math is an integrated part of our lives. Many students avoid taking advanced mathematics
in their higher studies thinking it is difficult. Due to this, they, unfortunately,
miss out on great career opportunities.