+1 and +2 PCM Formula Sheet

8/11/2019 +1 and +2 PCM Formula Sheet

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IIT-JEE

(viii)

C

p

-

C

v

= R

C R

yR

ix)

_ P

=

y;

C

v

=

;

C

p

C

v

Y- 1 y - 1

(x) In an isothermalchange,there is nochange in temperature,

39'-

PjV

j

=P

2

V

2

,

~ U =0

(xi) Inanadiabaticchange,thequantityofheatsuppliedortakenout is zero,

PV

Y

=

P V

Y

~ =

0

1 1 2

2'

TV

Y

-

1=

T

Y

-

1

1 1 2 2

p

P

1 2

py -1 p

Y

-

1

1 2

(xii) Workdonein adiabaticchange,

_ P 1 V P V

2

nR(T

1

- T )

_

2

2

W

Y

1

y-1

(xiii) Workdonein isothermalchange,

W

2.303

n

T

log

::)

2.303

P,V,

log ::)

C

(xiv) IfPV

n

=constant,it is called polytropicprocess(wheren f

y

Y=

-p)

C

v

Inthisprocess,

molarheatcapacity,

C = ~ _ _ R

)

y 1

n-1

(xv) Workdone in aclosedcycle is theareaenclosedbyPVgraph,

(

xv

i)

Slope

1 V diagram

P

Forisothermalprocess: (dP)

dV isoth.

V

yP

Foradiabaticprocess: ( dP)

dV

adia.

V

Brill iantTutorialsPvt. Ltd,

YG/Comp-Phy- 39


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Documents

+1 and +2 PCM Formula Sheet