Physics Some law's

1. With RespectfulTeacher
Shalauddin
Senior Lecturer in Physics
Departmentof NaturalSciences Md Samiul Islam
Daffodil InternationalUniversity Id:141-15-3294
Presentation ofPhysics

2. Presentation Topics
•Boyle’s Law
•Charles’s Law
•Avogadro Law

3. BOYLE’SLAW

4. RobertBoyle
• In 1662, Robert Boyle discovered this law
Law:WhenTemperature remainingconstant,volume of a fixed
amount of gas is inversely proportional to the pressure of the
gas.
Pressure andVolume are InverselyProportional
V ∞
1
P
V =
𝐾
P
PV= K
Here,
V = Volume
P= Pressure
K = ProportionalityConstant

5. CHARLES’S LAW

6. JacquesCharles
In 1802,JacquesCharles discovered this law
Law:When pressure remaining constant,volume of a fixed
amount at gas is directly proportional to the absolute
temperature of thegas.
Pressure andamount
Of gas are constant

7. Charles’sLaw
Volume andTemperature are Directly Proportional
V ∞ T
V= kT
V
T
= k
Here,
V =volume
T = temperature in kelvin
k = proportionalityconstant

8. AVOGADRO LAW

9. AmedeoAvogadro
In 1811,AmedeoAvogadro discoveredthis law
Law: When temperature and pressure remaining constant, volume of a
fixed amount at gas is directly proportional to the number of the
moleculespresentin the gas.
Temperature andpressure
Are constant

10. Avogadro Law
Volume and number are directlyproportional
v ∞ n
v =kn
v
n
= k
Here,
v =volume
n =number
k = proportionalityconstant

11. For comparing the same substance under two different sets of conditions, the law can be usefully
expressed asfollows:
𝑉1
= 𝑉2
n1 n2
n1
𝑉1
= 𝑘
n2
𝑉2
= 𝑘

12. THANKS