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Question
What are the differences between plane angle and solid angle?
Distinguish Between
Solution
Difference between Plane Angle and Solid Angle:
- Plane Angle:
- The angle between the intersection of two lines or planes.
- It is two dimensional
- Unit is the radian.
- Solid Angle:
- The angle between the intersection of three or more planes at a common point.
- It is three-dimensional.
- Unit is steradian.
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Base Quantities and Units
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Chapter 1: Measurement - Exercises [Page 10]
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RELATED QUESTIONS
Luminous intensity is the intensity of ______
The solid angle is measured in _______.
_______ is used to measure electric current.
Match the following.
| Temperature | Closeness to the actual value |
| Plane angle | Measure of hotness or coldness |
| Solid angle | Closeness to two or more measurements |
| Accuracy | Angle formed by the intersection of three or more planes |
| Precision | Angle formed by the intersection of two planes |
Consider the statement given below and choose the correct option
Assertion: Electric current, amount of substance, luminous intensity are the fundamental physical quantities.
Reason: They are independent of each other.
Name the three scales of temperature.
What do you mean by luminous intensity?
Define – mole.
What is electric current?
Mention the SI unit of luminous flux.
