Comprehensive IIT JEE Notes: A Complete Guide to Excel in the Exam
Description:
Are you aspiring to crack the prestigious Indian Institutes of Technology Joint Entrance Examination (IIT JEE)? Look no further! Our Comprehensive IIT JEE Notes provide a well-structured and comprehensive guide to...
• They should be measurable directly or indirectly by an instrument.
• Can be expressed by a numerical value followed by a unit.
𝑃𝑄 = 𝑛 × 𝑢
Which of these are physical quantities ?
1. The density of brass is 8.4 𝑔Τ𝑐𝑚3
2. The relative density of alcohol is 0.8
3. The mass of an empty bottle is 21.8 𝑔
4. The velocity of a moving train is 50 𝑘𝑚Τℎ
A B
1 and 4 1, 3 and 4
C D
1, 2, 3 and 4 1, 2 and 3
, Unit
Unit is a reference standard used to compare and measure a physical quantity.
mega 106 atto 10−18
kilo 103 zepto 10−21
deci 10−1 yocto 10−24
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