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Verified PHYSICS OBJ:

1-10: DAEDEBACCE

11-20: EADDEADCCB

21-30: DADEBBEAEC

31-40: DBBBBCBBDC

41-50: EBECDBCADD

51-60: BABCBDAADC




SECTION B

(1a) Force, unit is Newton(N)

(1b) Acceleration, Unit is m/s^2

(1c) Velocity, Unit is m/s

(2a)It means that the substance contains 10 units of elementary particles and matter

(2b)weight of objects varies because of- The spring used in spring balance-The acceleration due to gravity

[3]Kinetic enegy, A moving car is an
example
- Potential energy, bird at the top of a
tree is an example

(3b)
Kinetic energy is the energy due to
motion while potential energy isthe
energy by virtue of object

(4)
MsCs(tita1 - tita3)= MwCw(tita1 -
tita3)
320.8*Cs*(100-45)= 200*4.2*
(45-35.5)
17600Cs=840* 9.5
Cs= 840*9.5/17600
=7980/17600
Cs= 0.45Jg^-1K^-1

(6)
Given
t1=6s, t2=4s ,
V=2d1/t1, 330= 2*d1/6
d1= 1980/2=990m
V=2d2/t2, 330=2*d2/4
d2= 1320/2= 660m
Distance between the
differences
= d1- d2
= 990-660=330m

(7a) Electrophorns
(7b)
It consist of a metal sphere and
plates through which any charge
objects brought closer to it
releases the charge which is
stored in the metal sphere

(8a)
Transformer is called slep-up
when the number of turns in
secondary is greater than the
number of turns in primary (Ns >
Np)

(8b)
Given
Ep=2200v, Ip= 40A
Ns/Np= 1/12, Es=?
Es/Ep=Ns/Np=Ip/Is
1/12=Es/2200
Es=2200/12
Es=183.3V
Secondary voltage=183.3V

(9a)
- Electromagnetic spectrum
- x-ray oscilloscope
(b)
- they are used in radiological
laboratories to study defects in
bones
- they are used in solar system

(10a)
- No= initial number ofatoms
- alpha= decay constant= per
time(persecond/day)

(10b)
Given t1/2=20hrs, t=80hrs
Using,
N/No= (1/2 )^T/t1/2
N/N0=(1/2)^80/20
N/No=(1/2)^4
N/No=1/16
(11b)
Weighing b





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Posted By KELLYCHI On 07:10 Mon, 24 Jun 2013

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