Physics exams

Wednesday 31 August 2011

PCAT Physics Practice test 1 & Answer key

1) what is the atomic number A of Hydrogen

A. 1
B. 2
C. 0
D. 3

2)Neutron number N=?

A. A-Z
B. A+Z
C. A-Z-1
D.A-Z+1

3)which particule has mass but no charge

A. electron
B. proton
C. neutron
D. photon

4)what is electron energy of hydrogen in level n=1

A. 13.6 e.v
B -13.6 e.v
C  1.36 e.v
D  136 e.v

5) What is the maximum number of electrons in the orbital d?
A. 6
B.10
C.12
D.14


6)if the quantum number $\ell$=3 how many value of $m_{\ell}$ exist ?


A. 2
B. 3
C. 6
D. 7


Answer key


1.A
2.A
3.C
4.B
5.D
6.D



Monday 29 August 2011

MCAT Physics Practice test 2 & Answer key

1)we have two capacitors C1=1nF ,C2=10nF,what is the value in parallel of their capacitance sums ?

 A.   0.9  nF
 B.   11   nF
 C.   101 nF
 D.   1.1 nF

2)we have two capacitors C1=5nF ,C2=5nF,what is the value in series  of their capacitance sums ?


 A.   1.0 nF
 B.   25  nF
 C.   2.5 nF
 D.   10  nF

3)if  the focal distance of a lens is 2m. then the lens is :

A.  -1/2 diopter converging lens
B.   1/2 diopter converging lens
C.  -1/2 diopter diverging lens
D.   1/2 diopter diverging lens

4)if an object run at a speed 100 m/s  for  5 seconds ,what is the distance traveled by the this object ?

A. 50  m
B. 100 m
C. 200 m
D. 500 m

5)name this formula ,$n_{1}sin{\theta_{1}}=n_{2}sin\theta_{2} $

A.Newton's law
B.Amper's law
C.Snell's law
D.coulomb's law


6)one ball make cirular motion velocity V=12 m/s ,radius r =10 m
what is the angular  velocity :

A. 12 rd/s
B. 1.2 rd/s
C. 120 rd/s
D. 1 rd/s
7)A bird  flies  in 72km/hour , how far can flies in 20 seconds?

A. 20 m
B. 40 m
C. 200 m
D. 400m

8)name this $F=-k\Delta{x}$

A.Amper's law
B.Hook's law
C.newton' law
D.coulomb' law

9)what is the energy stored in a 1 $\mu{F}$ capacitor charged at 2kV

A. 5 j
B. 3.2 j
C. 4 j
D. 6 j


10) the electric field of very long straight wire is?


A.$ E=\lambda /4\pi \epsilon_{0}d$
B.$ E=\lambda/2\pi\epsilon_{0}d$
C.$E=\lambda/\pi\epsilon_{0}d$
D.$E=2\lambda/\pi\epsilon_{0}d$


Answer key
1.B
2.C
3.B
4.D
5.C
6.B
7.D
8.B
9.C
10.B

Sunday 28 August 2011

MCAT Physics practice test 1 & Answer key

MCAT( Medical college admisssion test ) practice test



 1.what is the melting  point of water at standard pressure in kelvin

A) 0 K
B) 273 K
C) 100 K
D) 173 K


2. what is the kinetic energy of  a 10 kg mass with speed  10 meters per second


A) 100 j
B) 300 j
C) 250 j
D) 500 j

3.which one is Newton's first law :

A) the speed of object dont change if resisance is null 
B)every object in motion still in motion
C)An object at rest stays at rest and an object in motion stays in motion with the same speed and   in    the same direction
D)any object still in motion if gravity is null


4. Neutron number N=  


A) A-Z
B) A+Z
C) A-A-1
D) A-Z+1


5. in somiconductor N-type the dopant atoms are capable of providing extra :
A) ions 
B) electrons
C) neutrons
D) holes 


6. we have two resistors in series  R= 1000  ohm ,and r = 100 ohm,the value of series resistor equal

 A) 90.90 ohm
 B) 1000 ohm
 C) 100 ohm
 D) 1100 ohm


7. two resistors in parallel R= 10 ohm and r= 10 ohm ,what is the value of parallel reistor 


 A)  5 ohm
 B) 10 ohm
 C) 100 ohm
 D) 20 ohm


8.what is the electron energy in hydrogen atom  level n=2

A) -3.4 e.v
B) -13.6 e.v
C) -1.5 e.v
D) 13.6 e.v


9.name this formula I =V/R


A) newton's law
B) ohm's law 
C) coulomb's law
D) Potentiel 's law 


10.name this formula  E = F/ qt

A) The Potentiel intensity
B) The electric displacement field
C) Coulomb's law
D) The electric field intensity


Answer key:
1 .B
2.D
3.C
4.A
5.B
6.D
7.A
8 .A
9 .B
10.D