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PHYSICS OBJECTIVES & ESSAY QUESTIONS AND ANSWERS
WAEC SSCE 2016 EXPO: PHYSICS OBJECTIVES & ESSAY Theory Questions And Answers
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PHYSICS OBJ:
1-10: CCBBCCDBBD
11-20: CBCCADACBB
21-30: BBABDBBDBD
31-40: DBBDDABABC
41-50: ACBDDABADB
(1)
(a)
impulse(I)=F*t
F=ma= m(v/t)= M((d/t)/(t))
f=M(l/T)/T)= MLT^-2
I=MLT^-2 * T
I=MLT^-1
(b)
Acceleration(a)=v/t=(d/t)/t
a=d/t^2= L/T^2= LT^-2
(c)
WOrk(w)=f*d
W=MLT^-2 * L
W=ML^2T^-2
===========================
(2)
Velocity(u)=20ms^-1
Angle(tita)=40 degree
At maximum height, h
V^2=u^2 2gh
U^2 sin^2 tita u
u= 20^2* (sin 40 degree)^2
u=20^2*(sin 4o degree)
u=400* 0.3455
u=138.2ms^-1
=============================
(3)
-smoke
-aerosol
-dust particle
======================
(4)
Given flux density(B)=0.217
Force(F)=9.6*10^-12N
Speed(v)=?
F=Bqv
9.6*10^-12= 0.12* 1.6* V
V=(9.6*10^-12)/0.192*10^-19
=50*10^-12 9
v=50*10^7
=5*10^8ms^-1
==========================
(5)
-for exploration of space
-it is used for war fare
-it is used for launching of satellite
================================
(6)
(a)doping is the process of producing an impure semiconductor by adding foreign elements to the pure semiconductor
(b)Doping a semiconductor improves the number of charge carriers
=============================
(8a)
Net force is the resultant force acting on the body
(8b)The principle of conservation of linear momentum states that is an isolated system,the total momentum before colision is equal to the total momentum after collision
example:collision of a bullet with a target
(8c)
Mass(m)200g=200/1000=0.2kg
height(h)=2.0m
New height(h)=1.8m
Impulse=F*t=m(v-u)
I=mgh*t=m(v-u)
I=0.2*9.8*(2.0 1.8)
I=7.45N
(8d)
Given; mass(m)=20g=20/1000
m=0.02kg
Frequency(f)=5Hz
Distance(x)=10cm=10/1000=0.1m
Velocity(v)=200cms^-1=2ms^-1
(i)
V=wsqroot(A^2-x^2)
V^2=w^2(A^2-x^2)
w=2*pie*f=2*3.14*5
w=31.4rad/s
2^2=3.14^2(A^2-0.1^2)
A^2-0.1^2=4/985.96
A^2-0.1^2=0.0041
A^2=0.00414 0.01=0.0141
A=sqroot(0.0141)
=0.12m
(ii)
Maximum velocity(v)
V=wA
V=3.14*0.12
V=3.768m/s
=3.8m/s
(iii)
Maximum potential energy
P.Emax==1/2MV^2max
P>Emax=1/2*0.02*3.8^2
=0.14J
----------------------------
(10a)
Critical angle is the angle of incidence in the optically densed medium when the angle of refraction is 90degrees
(10b)
Anti-note are created by region of maximum displacement in a wave
(10c)
Given D=46.2degrees
Refractive index(n)=?
n=sin1/2(A D)/sin1/2A
Refracting angle(A)=60degrees
n=sin1/2(60 46.2)/sin1/2*60
n=sin1/2(106.2)/sin30
n=sin53.1/sin30
n=0.7997/0.5
=1.5994
n=1.6
(10d)
-The object is placed at the principal focus
-The object is placed beyond the centre of curvature
(10e)
Object(u)=75cm
focal length(f)=30cm
(10ei)
Image distance(v)=?
1/u 1/v=1/f
1/75 1/v=1/30
1/v=1/30-1/75
1/v=(5-2)/150
1/v-3/150
v=150/3
v=50cm
(10eii)
Object distance(u)=75 25=100cm
1/u 1/v=1/f
1/100 1/50=1/f
1/f=(1 2)/100
1/f=3/100
f=100/3
f=33.3cm
================================
(11a)
Dielectric strength is the property of an insulating material to retain material to retain electrical properties
(11bi)
-Infra-red wave
-Geiger muller counter
-Scintillation counter
(11bii)
Irradiation of solar energy
(11c)
Charge(q)=1.0*10^-19C
Electric field intensity(E)=1200NC^-1
Weight of the oil drop=?
E=F/q
1200=F/1.0*10^-19
F=1200*1.0*10^-19
F=1.2*10^3*10^-19
F=1.2*10^-16N
(11d)
R=100ohm, L=0.05H, C=0.25uF
V=220v, f=50Hz
(11di)
Impedance(z)=sqroot(R^2 (Xl-Xc)^2)
Xl=2*pie*fl
Xl=2*(22/7)*50*0.05
Xl=15.71ohm
Xl=(1/2*pie*fc)
Xc=1/78.55*10^-6
Xc=10^6/78.55
=12730.7ohm
Z=sqroot(100^2 (15.71^2-12730.7^2)
Z=sqroot(10000 2.63*10^16
Z=sqroot(2.63*10^16)
Z=1.62*10^16ohm
(11dii)
Vrms=IZ
I=220/1.62*10^16
=1.36*10^-14
Administrator NaijaComms.com
Smart tags: Complete 2016 WAEC SSCE expo questions and answers, free 2016 WAEC expo run runz for CIVIC EDUCATION (OBJ & ESSAY PHYSICS PRACTICALLITERATURE IN ENGLISH (OBJ ) LITERATURE IN ENGLISH (PROSE ) GEOGRAPHY (OBJ & ESSAY )PHYSICS (OBJ & ESSAY) GEOGRAPHY 3 ( PRACTICAL and PHYSICAL GEOGRAPHY )CHEMISTRY PRACTICALGOVERNMENT (OBJ & ESSAY )ENGLISH LANGUAGE (ESSAY)ENGLISH LANGUAGE (OBJ) ENGLISH LANGUAGE (TEST OF ORAL )CHRISTIAN RELIGIOUS STUDIES ( OBJ & ESSAY) 9ISLAMIC STUDIES ( OBJ & ESSAY ) CHEMISTRY(OBJ & ESSAY)FINACIAL ACCOUNTING ( OBJ & ESSAY) BIOLOGY (OBJ & ESSAY )AGRIC PRACTICAL GENERAL MATHEMATICS (ESSAY) MATHEMATICS (OBJ) ECONOMIES (OBJ & ESSAY) BOOK KEEPING PAPER III&II (OBJ & ESSAY) BIOLOGY PRATICALLITERATURE IN ENGLISH (DRAMA& POETRY) OFFICE PRACTICE ( EASSY & OBJ ) AGRICULTURAL SCIENCE ( OBJ & ESSAY ) COMMERCE (OBJ & ESSAY)MARKETING FURTHER MATHEMATICS ( ESSAY ) ( OBJ )
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PHYSICS OBJECTIVES & ESSAY QUESTIONS AND ANSWERS
WAEC SSCE 2016 EXPO: PHYSICS OBJECTIVES & ESSAY Theory Questions And Answers
At Naijacomms.com
Keep refleshing this page for the answers to appear
Content (protected)
This is for paid package
How to subscribe
Direct Mobile: N400 MTN CARD.
Forward Your Name, MTN PIN, Subject Name, Phone number to: 07061837436
we will send the Obj & Essay directly to your submitted phone numbers 9hours before the exam day
Note that for those who can't afford to pay you are advice to go for the free packages, Answers are pasted here 10 minutes after the exam begins,
For content:PHYSICS OBJECTIVES & ESSAY
Questions & Answers to appear, you have to share this page to 10 friends on WhatsApp, using the WhatsApp button below this post, and share to Facebook just once using the Facebook button below this post. After doing this the PHYSICS OBJECTIVES & ESSAY Questions & Answers would automatically appear.
PHYSICS OBJ:
1-10: CCBBCCDBBD
11-20: CBCCADACBB
21-30: BBABDBBDBD
31-40: DBBDDABABC
41-50: ACBDDABADB
(1)
(a)
impulse(I)=F*t
F=ma= m(v/t)= M((d/t)/(t))
f=M(l/T)/T)= MLT^-2
I=MLT^-2 * T
I=MLT^-1
(b)
Acceleration(a)=v/t=(d/t)/t
a=d/t^2= L/T^2= LT^-2
(c)
WOrk(w)=f*d
W=MLT^-2 * L
W=ML^2T^-2
===========================
(2)
Velocity(u)=20ms^-1
Angle(tita)=40 degree
At maximum height, h
V^2=u^2 2gh
U^2 sin^2 tita u
u= 20^2* (sin 40 degree)^2
u=20^2*(sin 4o degree)
u=400* 0.3455
u=138.2ms^-1
=============================
(3)
-smoke
-aerosol
-dust particle
======================
(4)
Given flux density(B)=0.217
Force(F)=9.6*10^-12N
Speed(v)=?
F=Bqv
9.6*10^-12= 0.12* 1.6* V
V=(9.6*10^-12)/0.192*10^-19
=50*10^-12 9
v=50*10^7
=5*10^8ms^-1
==========================
(5)
-for exploration of space
-it is used for war fare
-it is used for launching of satellite
================================
(6)
(a)doping is the process of producing an impure semiconductor by adding foreign elements to the pure semiconductor
(b)Doping a semiconductor improves the number of charge carriers
=============================
(8a)
Net force is the resultant force acting on the body
(8b)The principle of conservation of linear momentum states that is an isolated system,the total momentum before colision is equal to the total momentum after collision
example:collision of a bullet with a target
(8c)
Mass(m)200g=200/1000=0.2kg
height(h)=2.0m
New height(h)=1.8m
Impulse=F*t=m(v-u)
I=mgh*t=m(v-u)
I=0.2*9.8*(2.0 1.8)
I=7.45N
(8d)
Given; mass(m)=20g=20/1000
m=0.02kg
Frequency(f)=5Hz
Distance(x)=10cm=10/1000=0.1m
Velocity(v)=200cms^-1=2ms^-1
(i)
V=wsqroot(A^2-x^2)
V^2=w^2(A^2-x^2)
w=2*pie*f=2*3.14*5
w=31.4rad/s
2^2=3.14^2(A^2-0.1^2)
A^2-0.1^2=4/985.96
A^2-0.1^2=0.0041
A^2=0.00414 0.01=0.0141
A=sqroot(0.0141)
=0.12m
(ii)
Maximum velocity(v)
V=wA
V=3.14*0.12
V=3.768m/s
=3.8m/s
(iii)
Maximum potential energy
P.Emax==1/2MV^2max
P>Emax=1/2*0.02*3.8^2
=0.14J
----------------------------
(10a)
Critical angle is the angle of incidence in the optically densed medium when the angle of refraction is 90degrees
(10b)
Anti-note are created by region of maximum displacement in a wave
(10c)
Given D=46.2degrees
Refractive index(n)=?
n=sin1/2(A D)/sin1/2A
Refracting angle(A)=60degrees
n=sin1/2(60 46.2)/sin1/2*60
n=sin1/2(106.2)/sin30
n=sin53.1/sin30
n=0.7997/0.5
=1.5994
n=1.6
(10d)
-The object is placed at the principal focus
-The object is placed beyond the centre of curvature
(10e)
Object(u)=75cm
focal length(f)=30cm
(10ei)
Image distance(v)=?
1/u 1/v=1/f
1/75 1/v=1/30
1/v=1/30-1/75
1/v=(5-2)/150
1/v-3/150
v=150/3
v=50cm
(10eii)
Object distance(u)=75 25=100cm
1/u 1/v=1/f
1/100 1/50=1/f
1/f=(1 2)/100
1/f=3/100
f=100/3
f=33.3cm
================================
(11a)
Dielectric strength is the property of an insulating material to retain material to retain electrical properties
(11bi)
-Infra-red wave
-Geiger muller counter
-Scintillation counter
(11bii)
Irradiation of solar energy
(11c)
Charge(q)=1.0*10^-19C
Electric field intensity(E)=1200NC^-1
Weight of the oil drop=?
E=F/q
1200=F/1.0*10^-19
F=1200*1.0*10^-19
F=1.2*10^3*10^-19
F=1.2*10^-16N
(11d)
R=100ohm, L=0.05H, C=0.25uF
V=220v, f=50Hz
(11di)
Impedance(z)=sqroot(R^2 (Xl-Xc)^2)
Xl=2*pie*fl
Xl=2*(22/7)*50*0.05
Xl=15.71ohm
Xl=(1/2*pie*fc)
Xc=1/78.55*10^-6
Xc=10^6/78.55
=12730.7ohm
Z=sqroot(100^2 (15.71^2-12730.7^2)
Z=sqroot(10000 2.63*10^16
Z=sqroot(2.63*10^16)
Z=1.62*10^16ohm
(11dii)
Vrms=IZ
I=220/1.62*10^16
=1.36*10^-14
Administrator NaijaComms.com
Smart tags: Complete 2016 WAEC SSCE expo questions and answers, free 2016 WAEC expo run runz for CIVIC EDUCATION (OBJ & ESSAY PHYSICS PRACTICALLITERATURE IN ENGLISH (OBJ ) LITERATURE IN ENGLISH (PROSE ) GEOGRAPHY (OBJ & ESSAY )PHYSICS (OBJ & ESSAY) GEOGRAPHY 3 ( PRACTICAL and PHYSICAL GEOGRAPHY )CHEMISTRY PRACTICALGOVERNMENT (OBJ & ESSAY )ENGLISH LANGUAGE (ESSAY)ENGLISH LANGUAGE (OBJ) ENGLISH LANGUAGE (TEST OF ORAL )CHRISTIAN RELIGIOUS STUDIES ( OBJ & ESSAY) 9ISLAMIC STUDIES ( OBJ & ESSAY ) CHEMISTRY(OBJ & ESSAY)FINACIAL ACCOUNTING ( OBJ & ESSAY) BIOLOGY (OBJ & ESSAY )AGRIC PRACTICAL GENERAL MATHEMATICS (ESSAY) MATHEMATICS (OBJ) ECONOMIES (OBJ & ESSAY) BOOK KEEPING PAPER III&II (OBJ & ESSAY) BIOLOGY PRATICALLITERATURE IN ENGLISH (DRAMA& POETRY) OFFICE PRACTICE ( EASSY & OBJ ) AGRICULTURAL SCIENCE ( OBJ & ESSAY ) COMMERCE (OBJ & ESSAY)MARKETING FURTHER MATHEMATICS ( ESSAY ) ( OBJ )
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Correct Real Waec 2016 PHYSICS OBJECTIVES & ESSAY Prose And Objective ...
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