fufsii
cdw ct6
4
plawaztg dn trri
toi, Tlei sizuk choru w6t
$l)
pkuweg
dn
trd loi Faq
p
l'! nkdt
C6u
1:
Tai mQt di6rn
c6ch
ngu6n Am 10m thi e6
mric
oudng
d0
5m iA 90d8.
FIdi
taimQt
di6m
cach ngu0n
6m
lin thi
c6 mirc cudng
ctQ Atn ld bao
nhi€u?
.4. l00clB
ts.

gian
gifi'a
hai
lAn li€n ti6p
so-i dAy
duSi thdng
la
0,05 s.
V4n
t6c
truyAn
s6ng tr€n
ddy ln :
A. i6
rnls.
ts. 12
m/s"
'
'"
C"
4 mls'
X)"
I
rn/s'
CAu
3: lv{Qt
s6ng co-
lan truy6n
trong
rnQt rn6i

sdt
mQt ciriec
phao
tr€n
m{t
bi0n
th6y n6 nh6 cao
l6n 5
lAn trong B
gifry vi thAy
kho6ng
cdch
2 ngon s6ng
kA nhau ld 2m-
VAn
t6c
truy6n
song
bi6n ld
:
A. I
m/s
E. 2
rn/s
L.
i+
m/s
ll"
Bin/s
C&m 5:

Cftu
6:
Khi
s6ng Am
tmydn tir
kh6ng
ktri
vdo nu6c
thi bu6c
s6ng:
A.
Tang
B. Gi;im
c. Kh6ng
ddi
D. Ban
ddu
giirn sau d6 t6ng
Gaul Z:
HaOt
dAy ddn
trOi
r6t ddi c6
elAu
A clao
ddng
v6'i tAn
sd f theo
pliuong
vudng

l02FIz. Btr6c s6ng
cria s6ng
d6 c6
gi.{
tr!
ln
A.
2
cin
B. 3 cm
0' 4 crn
D. 5cm
{lau E;
F{ai
ngudn s6ng
fr€n
mat nu6c
lh S,
vb S, phdt ra
hai dao
ddng c6 phuong tdnh u,
=
asincrrt vb
il,
=
acos(,)t.
S6ng kirong
suy
gihm, Cho
S,Sr_

ld
3Oern/s,
AB
:
8crn. tv1Qt
dud'ng trdn
R
:2,5
Qffi e6
tdni t4i
trung etri$m 0
eila AB,
nim
trong
mdt
phdng ch{ra c6e
vAn
giao
thoa.
56
diOitr clao
dQng cgc
dai
trdn
cit-rd'rtg
trdn trA
A. 10.
B. 14.
c.
16.

ldw brli
: 9{}
ph{ti
C"
5
tui{-{z
CArx
trg;
Ngudn
drn diiSm
S
ph6t ra s6ng
drn
truy6n
trong
rnOi
trr-Ld'ng
ddng hrL6ng.
Co hai
di6m A vdL
B ninr
tr01
nr,?a
dudng
thting
xu6t
ph6t
tir
S.
Mf'c cud'ng

D.1t
vdo fiai dAu
rnach
xoay
chi€u
n6i Uilp
hi€u diQn th6 u:200cos(l00nt
+
xl6)Y
ilri cuo'ng
il6
dong
ctiQn
trong nrach
ld
i
:
20cos(100ru1
-
n/6)
mA.
Cdng
su6t ti€u thu trong
mach
ld.
A.
1V/
i3. lkw
c.2w
D"2kw

C.sOV D.80V
C#u
13:
Y'hrurg chon
s6ng
g6m
cuQn
cAm
L vd
2
tu Ct,Cz.
N0u chi dtrng L vd C1
thi thu duo.'e
s6ng
c6
L1
:
X00 m. N6n
chidirng
I- vd Cz
thi
thu
rluo-c s6ng
1"2:75 m. I{hi dnng I- vd
haitr.t C1
,
C2 sollg
song
nhau ttii
khung thr.r

4 MF{2.
Khi
ding {- vh C, n6i tidp
v6i C, thi khung
bat dum
sdng
rli6n
tfu c6 tdn sii
lI
A. i rvHz
E"
2,4lv{}{z
]f," 7 V{Fiz
Ida
{id fhi: Jltr
d*^
:
VX{V,t
www.VNMATH.com
€.i.
nr n5: V{peh
rJao
rtgng
diQm tfi' tu alo {.C. &40t
n&'a ndng truc.'ng
diQn tnu}ng er,;'l: efai trong tu cltu5r$s
gfu}1111
nbng luomg til
trong
cu0n edm m6t tho'i

truyAn
s6ng.
C. d
vd
6 luOn
nguo-c
plia
vdi nhau D. E
vA
d luOn
vu6ng
g6c
vdi
phuong
truyAn
s6ng.
CSu
1?: Mach daodOngc6
C=
6nF,
L,= 6pH.
Domachc6cli0n
tr&R.
=
1 f), n0ndaoddngtrong
machtilt
i
ddn. Dd duy
tri
dao ddng

ndn clao
rtdng tr"ong mach tit ddn.
Dd duy trl dao
ddng vdi hi0u diCIn
thd
cuc
aai gifa
hei
bin
tu ctriOn
lh Uo
=
10V
thi phAi
bd
sung
nlng iuong
cho
rnach mdi
c0ng sudt lh
A. F
=
X5 rnW B" F
=
20 inW,
C.
F
=
25 mW I)" 30 m\fr/
CSs!

nghi€rn
giao
thoa
dnh sfng
v6'i khe Young, chi0u cl6ng thdi
hai bfic xa don sfc c6
bLi6'c sting I1
:0,4Epin
vd l,z
:
0,54prn. Ngrro'i
t.athdy vAn
s6ng bAe
4 cfra bue xa
L1 trirng v6'i
'zdn
sdng bAc
k cira )"2
.
Gid
lri
cura
l<
li:
A"2
8.3 {"4 E}.5
Cfiu Ztr: Con
li,e ld
xo
treo thdng c1irng dao d6ng

v
=
40J3 crnls
vi gia
tdc a
-
-
8
rn/s2.
tsidn
d6 cira dao ddng
lh
A.3em B.4cm C.5cm
D.6cm
C&rlr ?3: Con 16c lb xo
cd
khdi iuorig m
=,
100
g,
daro c16ng di€u
hoi
vdi
bi6n
dd
A
=
2 cmr.
Tai thli
rlidm

=32
mJ.
Ttii thbi
didin
ban
diiu vAt
e6
vAn
toc v
=
40",8
cmls vi gia
t6c
a
=
B
m/s2. Pha
ban ddu cria
dao d0ng
li
t\ nl1
n,].nl6 C"-2nl3
l] nl3
Cfer"l 135;
IvI0t
con lic lb xo cd m
=
5009, clac ctdng didu laoh
vcfi
co

dinh
nfi cao
h
=
640
nr th) ddng
hd
vAn chi ifting
gid.
Cho tiay treo con
laic
c6 rx= 4.10_5K-l,
bdn kinir trdi
ddt
R.
=
5400km.
Nhiet
dO
tr0n dinh nrli l:\:
A. t20C TJ.220C C. 250C
D. 350C
Cftu
27:
Trong
clao
dQng
tXt edn dai
ltro-ng nio sau ctfiy
ld kh6ng

(iong
fllelt
lloa /
A.A<lcrn E.A<2cm
C.A<3cm
D.A<4cm
CAu 29: Vdt tham
gia
ddng thdi hai dao d,3ng
cti phuong lrinh:
r,
=
cosIjnt cm vb
,r"
=
4sinl}nt cm .
Vdn tdc cirn vAt
khi t
=
I s ld
,4. 40
cnr/s
E" 40".1J cmls C" 40
r
crnls
D. 80 n" cm/s
www.VNMATH.com
./
c.*aa 3{}:
'ltoi1g

C" fi.Oto
khOng
quay
ddu,
v6n t6c
g6c
trung
binh
nh6
hon
tdn
sci
gdc ctra tir
trulng
quay
n.
Va"
t6c
giciO
ing
1yn
lion
tray nh6
hm,
rnQj
cdch
bdt
k!,
pliq ttru6c
vho cdng

n/5)
mA.
Cdng
sudt
ti0ri
thu trong
rn4ch
lA
A" I
W
E" 1
kW
{-2W
T}" 2' kW
Csu
SZ
: Mpch
RLC
n6i
tirSp
g6m
eudn
d6y
(L,
r)
vd
tr;
clign
C.
D?t vdo

8.40V
i,ri
c'50v
D'60V
CAu
35:
Khung
chon
s61g
g6rn
cugn
cam
L,vA
2
tu Cr,Cz.
NAu
chi dirng
L
vd
Cr thi
thu
clugc s6ng
c6 1"1
:
100
m.
t{6u
ehioirng
L
vJC,

di6n
tir
c6 f
=
3
'It4IIz,
khi
ding
L
vb
C,
ndi
tidp
vdi C,
thi khung
b6t
clLroc
8.50
m
Cfeu 34:
NXach
{-C
gdrn L'ud
Cr,
Cr'
Khi
dDng
L
vh
C'

35:
Mach
dao
ri6ng dien
tir tq
do
LC.
Szldt
nira
ndng
l,-rong
rJi€n
truo'ng
er;Lc
d4i
trong
tu chuydn
thinh
pdng
lu'ong
ttr
trong
ci-r$n
e6.,r
mAt
thd'i
gian
ts"
Chu
ki' dao

F vd
n
tru6n
vu6ng
pha v6inhau
B.
E
vd
B iu6n eiing
phuong v6'i
phuc;-ng truyOn s6ng"
C.
g
vd
F
lu6n
rlguoc
pha v6'i
nhau
D.
E vd
6
ludn vu6ng
g6c
vdi
phuo'ng
tnryAn s6ng'
'
Cfru
ST:

phii bd sr"rng
ndng
lurony,
cho
rnach
mdt
cOng
sriiit
l)
,A.
Ir;20
mW
E.
F
=
30
urW
C. P
=
40 rnW
l). P
=
50 rnW
C6u3S;
fuiach
rlaod6ng
cri C
=
6nF,
L

cho mach
mOt
cOng
su{t
l}
A.F=i5mW
B.F=20mW
C.P=25mW
D'30m1i/
Cfirx
Jg:
Trong thi
nghiorn
giao thoa
iAng,
khoing
cich
hai
khe a: 0,2mm,
tir hai
khe
dtln
mdLn ll
:2m'
Birc
;il;
,4,
S
"O
n

chi6Lr
dAng
thsi hai
biLc
x.a don
sic
c6 bu'6'c
song
?"1
: g,4Eprm
vA
)"2

0,6IpLm
"
lqgrrd
i ta
thhy vdn
suing
b6c
4 cira bfic
xp
1"1 trdng
v6'i
vAn s6ng
bflc k
cL"la ?"2 .
GiA
tri
ciia

ddng
qt1*ng diqn
thi
hiQu diQn
th6 ham c6 eIQ
lo,n 2 v.
NOu
d4l.
giiil
an0t
vd,catdt
e lra tri
bdo
quang diCIn
hieu
elen
ttre
ulq
^
3
v thi
dOng
ning clrc
d4i cira
0lectr0n
qt-rang
di*
khi
l"^i,tiot
ld

0,6;.un
cdch lrrOng
l6ng kinh
mQt
ctoan
d:50
cm, mi"n
cich lrr:6'ng
ti'ng
kintr
i,:
1,5
m. Khoeng
viiri
i c6
giA tri
la
D"
i='0,5
rnm
A"
i
:0,2
rttnt
tr3.
i''=
0,3
min
C.
0,4

'7
/"
A. Tdc dung 10n kinh dnh B. Lhm ion
hod khdng khi
/
C. Khdng bi
nudc hdp
thq D. C6.thd
gAp
ra hi0n tu-d. ng
quang
diQn
/
C6u
45: Trong
nguydn
tri hidrd khi dlechon nhAy
tit
qyy
d?o N
v€
qu!
dpo L thi nguydn
tri'hitlrO
phft
rabftc
x4 c6 bu6e s6ng 1.,, khi Clectron nh6y tir
qu!
clpo O vA
qu!

pm vdo
cat6lcria
mdt
t6 bdo
quang
cliQn
c6 cOng tliorit A
dC
fao
ra cldng
quang
di€n trong
mach. Dong diQn
quang
diQn tipn'triQt
ti6u nho
mQt
hiQu diQn
th6
ham c6
gi5\tri
1,27
V.
Cdng
thoSt
A
cfia cat6t
1A
\
a. l,ig eV

kim loai
dirng
ldm
catOt
D. Cud'ng dd cfia chirm
siing
kfch
thich
C&u 48:
T'inh
chu
kj' b6n rd
T cria rndt chdt
ph6ng
xa,
cho bidt tai thdi didm t,, tf
sd
gifia
hat con vh'hat
mg lh
7,
rai thdi didm
t,
sau
t, 414
nghy,
rf
sd d6
lh 53.
A. 125

kdt riong: cisa
a
li 7,lOMev;
cird
ufani
{J234ld
7,63Mev; cria thOri
Thm0
h
'7,70Mev.
l.l5ng luong
toi ra khi
mQt hat
nhdnU234
ph6ng
xa
a
tao thhnh Th230ld
A. t2 MeV
B. 13 MeV C 14
MeV D. 15 MeV
e'=i:
www.VNMATH.com
I"AN
nAP
Au
rru
TrrrJ
rtAr Hqc
ru6n

B
A
C
C
6
B
A
D
D
7,
D
c
B
D
8,
B
r$
B
C
I
C
B
D
B
10
C
A
c
B
11

C
D
D
D
18
B
C
B
B
19
B
B
C
C
20
A
B
C
C
2t
D
A
A
A
"ta
D
B
B
B
23

29
D
C
C
C
30
C
C
C
C
31
A
D
C
C
32
B
D
D
D
33
C
B
D
E
34
C
B
A
A

4L
A
A
A
D
42
D
D
B
D
43
B
B
C
B
44
C
C
C
B
45
D
n
It
(-
C
46
B
B
D