Advertisements
Advertisements
प्रश्न
Answer the following in detail.
When are approximations necessary in daily life and when should they be avoided?
उत्तर
An approximation or estimation is a reasonable guess about the measure of a physical quantity. For example, we use an approximation in adding salt to food while cooking. We use approximation when we try to figure out the time it would take to reach a certain place by car. In our daily life, we use approximations in many situations. They are useful as they save time. But, since they are not accurate in measurements, they should be avoided in scientific studies and experimentation.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Distance travelled d = ________ × time t
How does the density of water changes when it is heated from 0°C to 4°C,
How does the density of water changes when it is heated from 4°C to 10°C ?
Fill in the blank:
1 metric tonne = .............
Name two devices used to measure the short time interval of an event.
Answer the following in detail.
What are the fundamental physical quantities? Name any three fundamental physical quantities.
Tick the most appropriate answer.
Which of the following weighing devices has very high accuracy and sensitivity?
Tick the most appropriate answer.
The system of measurement based on centimetre-gram- second is known as
Answer the following in detail.
which is the most suitable unit for measuring the volume of a glass filled with water?
A physical quantity A is dependent on other four physical quantities p, q, r and s as given below A = `sqrt("pq"/("r"^2"s"^3))`. The percentage error of measurement in p, q, r and s are 1%, 3%, 0.5% and 0.33% respectively, then the maximum percentage error in A is ______ %.