SEKOLAH MENENGAH PERTAMA KRISTEN TRIMULIA
Jl. Dr. Djunjunan No,105 Telp. 6037934 Bandung 40173
SOAL LATIHAN PAT SEMESTER 2 TAHUN PELAJARAN 2020/2021
Mata Pelajaran : IPA – Fisika
Waktu
: 60 menit
Hari / Tanggal : Jumat, 4 Juni 2021
===================================================================================
1. There are some statements about vibration below ! Which the following is not a correct statement ?
A.
Vibration is a periodic oscilating motion ( back and forth ) passing through its balance position
B.
Amplitude ( A ) is the farthest distance of vibration between a certain point to its balance position
C.
Frequency ( f ) is the number of vibrations performed by an object in every second
D.
Period ( T ) is the time needed to make a half vibration
2. A picture of simple pendulum is given !
Sequence of vibration is : A – B – C – B – A – B. The right statement of number of vibration is…
A. 1/4
C. 5/4
B. 3/4
D. 6/4
3. There is an experiment about vibration by using a plastic ruler as the figure shown below !
Which the following is the right statement…
A.
B.
C.
D.
If the frequency of the vibration is high, it means number of vibration
per second is low also
If the frequency of the vibration is low, it means number of vibration
per second is high also
If the frequency of the vibration is low, it means number of vibration
per second is low also
If the frequency of the vibration is low, it means the period of vibration
Is high
4. The movement of a spring is an example of vibration according to this picture is shown !
In this picture, point A is balance position of this spring. If this spring moves from A – B – A and it takes 2,5
s. What time is needed for 20 vibrations ?
A. 50 s
C. 150 s
B. 100 s
D. 200 s
½ vibration= 2,5s
1 vibration= 5s
20 vibration= 20 × 5 = 100s (B)
5. Look at the picture of pendulum below ! This pendulum produces 100 vibrations in 5 minute . What time is
needed for pendulum to move from 1 – 2 – 3 ?
A. 0, 5 s
B. 1 s
C. 1,25 s
D. 1, 5 s
100 vibration= 60×5= 300s
1 vibration= 300/100=3s
½ vibration= 3÷2= 1,5s (D)
6. Look at the picture of guitar – instrument below !
All statements about period and frequency of string
are correct, except….
A. String 1 has a lowest period rather than string 3
B. Pitch D has a highest period rather than string B
C. Pitch G has a higher period rather than Pitch B
D. String 6 has the lowest period rather than string 3
7. An object is vibrating with 10 vibrations in 1/3 minute. What we can say about its frequency ( f ) and period (
T) ?
A. Frequency ( f )
B. Frequency ( f )
C. Frequency ( f )
D. Frequency ( f )
10 vibration= 1/3×60= 20s
F= 10/20= 0,5Hz
T= 20/10= 2s
= 30 Hz, period ( T ) = 1/3 s
= 3 Hz, period ( T ) = 1/30 s
= 0,5 Hz, period ( T ) = 2 s
= 5 Hz, period ( T ) = 0,5 s
8. Vibration of the wings of a bee when it flies can produce 0,5 Hz of frequency. If this process of vibration
occurs in 2 minute then the amount of vibration is…
A. 60
C. 100
B. 80
D. 120
N= 0.5×120=60 (A)
9. Look at the picture is given.
According to the properties of wave ! The right sequence from 1 – 2 – 3 is…
A. Refraction - Transmission – Diffraction
B. Transmission - Refraction – Reflection
C. Refraction - Diffraction – Transmission
D. Transmission – Refraction – Diffraction
10. Look at the picture is given ! The right statement according to the picture is….
A. That is an example of transverse wave
B. Disturbance of wave parallel with direction of
wave
C. That is an example of electromagnetic wave
D. Disturbance of wave perpendicular with direction
of wave
11. The data of electromagnetic wave is given as the figure shown !
The right statement to explain “ why UV is very dangerous wavelength for human “is…
A. UV is a part of visible light
B. The wavelength of UV is higher than radio – wave
C. UV contains the highest frequency in visible light
D. UV has a higher period of vibration rather than radio wave
12. Look at the picture is given !
If the distance between the left hand of the boy and the tree is 6 m. The length of 1/4 wavelength in this picture
is…
A. 1 m
C. 2 m
B. 1,5 m
D.3m
3 wave=6 m
1 wave= 6/3= 2m
½ wave= 2/2= 1m
¼ wave= ½= 0.5 m
13. There are three patterns of wave propagate at the same time duration and it can be displayed below !
The wave with lower period is shown by …
A. 3
C. 1
B. 2
D. 1 and 2
15.
Look at this picture ! The right statement for this picture according to wace is…
A.
B.
C.
D.
16.
This is tranverse wave because direction of disturbance parallel with direction of wave
This is longitudinal wave because direction of disturbance perpendicular to direction of wave
This is transverse wave because direction of disturbance perpendicukar to direction of wave
This is longitudinal wave because direction of disturbance parallel with direction of wave
Look at the infogram the of tsunami wave is given !
All statements about tsunami wave are incorrect, except…
A.
The wave speed will increase if tsunami wave moves from the ocean to the shore
B.
Speed of tsunamis will slow down but will not grow in size as they come ashore
C.
The wavelength of tsunami will increase when tsunami wave moves from the ocean to ashore
D.
The energy of tsunami wave increase when it reaches a shallow area
17. The graph of transverse wave is given below !
Time taken for wave to move from point A to point B is 4s. Frequency dan wavelength of wave according to
graph is…
A. f = 4 Hz, λ = 2 m
C. f = 0,5 Hz, λ = 8 m
B. f = 2 Hz, λ = 4 m
D. f = 8 Hz, λ = 8 m
F= 2/4=½= 0.5hz
Lambda=16/2=8m
18. Look at the graph is shown !
A.
B.
C.
D.
The right statement about Amplitude ( A ) and half of wavelength ( ½ λ ) is…
A = 0, 5 cm, 1/2 λ = 50 cm
A = 0, 5 cm , 1/2 λ = 100 cm
A = 0, 025 cm, 1/2 λ = 5 m
A = 0, 25 cm, 1/2 λ = 2,5 m
19. A transverse wave propagates and it can be described in this graph below !
Period of wave in this graph is..
A. 0,1 s
B. 0,2 s
C. 0, 3 s
D. 0,4 s
T= 0.6/1,5=0.4s
20. A slinky produced a pattern of longitudinal wave as the figure shown !
The wave speed of this longitudinal wave is…
A. 50 cm/s
C.. 40 cm/s
C. 30 cm/s
D. 20 cm/s
F= 1,5/1,5=1hz
Lambda=60/1,5=40cm
V=1×40=40cm/s