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What do you understand by the term order of magnitude of a quantity?

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Question

What do you understand by the term order of magnitude of a quantity?

Short/Brief Note
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Solution

Order of a magnitude of a quantity: The exponent part of a particular measurement is called the order of magnitude of a quantity.
OR
The order of magnitude of a given numerical quantity is the nearest power of ten to which its value can be written

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Measurements
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Chapter 1: Measurements and Experimentation - Unit 2 Exercise 2

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Goyal Brothers Prakashan A New Approach to ICSE Physics [English] Class 9
Chapter 1 Measurements and Experimentation
Unit 2 Exercise 2 | Q 1.1

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Questions based on Higher Order Thinking Skills:

There are three spheres A, B, C as shown below.

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Questions based on Higher Order Thinking Skills:

There are three spheres A, B, C as shown below. Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C.

Now answer the following questions.

  1. Find the ratio of masses of spheres A and B.
  2. Find the ratio of volumes of spheres A and B
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