12 Questions
What is the definition of a physical quantity?
A quantity that can describe the laws of physics and can be measured
Which type of quantities are independent of each other?
Fundamental quantities
How are derived quantities defined?
Quantities expressed in terms of fundamental quantities
What is a unit in the context of measuring physical quantities?
A reference standard used for measurement
Which type of units are defined for fundamental quantities?
Fundamental units
What is the purpose of comparing a physical quantity with a standard quantity?
To determine measurements
What is the fundamental unit of length in the SI system?
Meter
Which system of units is based on seven basic units and two supplementary units?
SI system
What is the definition of one candela in the SI system?
1/60th of the luminous intensity of 1 square centimeter of a perfect black body maintained at the freezing temperature of platinum (1773°C)
What is the dimensional formula used for?
To determine the units of a derived physical quantity
How is the unit of time defined in the SI system?
The time taken by the light of a specified wavelength emitted by a caesium-133 atom to execute 9192631770 vibrations
What is the definition of one radian in the SI system?
The angle subtended at the center of a circle by an arc equal to the radius of the circle
Learn about units and measurements for JEE exams. Understand the concept of standard units for measuring physical quantities such as length, mass, and time. Explore how standard units are used to measure objects accurately.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
