5 Questions
What is the fundamental unit of length in the SI system?
Meter
The dimension of angular velocity is [M^0 L^0 T^-1].
True
What is the significance of the concept of dimension in physics?
Dimensions are used to express the physical quantities in terms of fundamental units, and to check the correctness of a physical equation.
Match the following physical quantities with their corresponding dimensions:
Velocity = [M^0 L^1 T^-1] Force = [M^1 L^1 T^-2] Energy = [M^1 L^2 T^-2] Time = [M^0 L^0 T^1]
The unit of surface tension is _______________.
N/m
Study Notes
Fundamentals of Physical Quantities
- The fundamental unit of length in the SI system is the meter (m).
Dimensional Analysis
- The dimension of angular velocity is [M^0 L^0 T^-1], indicating it has no dependence on mass, length, or time.
Significance of Dimensions in Physics
- Dimensions are crucial in physics as they enable the expression of physical quantities in a concise and meaningful way, facilitating calculations and comparisons.
Surface Tension
- The unit of surface tension is typically measured in Newtons per meter (N/m) or dynes per centimeter (dyn/cm).
Matching Physical Quantities with Dimensions
- (Awaiting provided matching pairs to create detailed notes)
This quiz assesses knowledge on fundamental units, dimensions, and physical quantities in the context of Class 11 physics. Topics include the SI system, angular velocity, and surface tension.
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