Cutubka 1, isku day
Which of the following shows oscillatory motion?
Riix doorasho si aad jawaabta u aragto.
Isugu diyaari imtixaanka qaranka ee Form 4 Physics adigoo isticmaalaya 2,688 su'aalood oo laga qoray buugga dugsiga, cutub cutub. Ku tababaro cutubyada aad doorato iyadoo jawaab kasta la sharxayo, ama gal imtixaan buuxa oo waqti leh oo si daacad ah u arag inaad diyaar tahay.
Waxa aad helayso
- Su'aal laba jeer lama siinayo: Waxaa lagu siinayaa su'aalo cusub ilaa aad dhammaantood aragto. Markaas kadib ayay kuwii aad khaldday soo noqonayaan.
- Jawaab kasta waa la sharxay: Sabab gaaban oo jawaab kasta la socota, iyo bogga buugga ee aad dib u akhrinayso.
- Imtixaan buuxa oo waqti leh: Su'aalo buugga oo dhan ka yimid oo saacaddu socoto, jawaabna lama tusayo ilaa aad gudbiso.
- Qiimayn daacad ah: Diyaar, dhow ama weli maya, cutub kasta. Waxaa la bixinayaa oo keliya markaad ka jawaabto in ku filan oo macno samaynaysa.
Cutubyada iyo casharrada
Casharka 1: Periodic and oscillatory motion
- Oscillatory motion
- Periodic motion
- Frequency and period of periodic motion
- Simple harmonic motion
- Examples of simple harmonic motion
- Mass attached to a spring
- Hooke's law
Casharka 2: Mathematical representation of simple harmonic motion
- Terms used to describe SHM
- Period and frequency of SHM
- Energy of simple harmonic motion
Casharka 3: Equations of Simple harmonic motion and reference circle
- Reference circle
- Displacement of SHM
- Velocity of SHM
- Acceleration of SHM
Casharka 4: Simple pendulum and applications of SHM
- Simple pendulum
- Applications of simple harmonic motion
Casharka 1: Types of waves
- Introduction
- Mechanical waves
- Water waves
- String waves
- Seismic waves
- Transverse waves
- Longitudinal waves
- Electromagnetic waves
- Gamma rays
- X-rays
- Comparing gamma rays and X-rays
- Radio and microwave communication
- Using microwaves for communication
- Dangers of electromagnetic radiations
- Heating and burns
- Skin cancer and eye conditions
- Cancer and radiation sickness
- Lesson exercise
- Chapter exercise
- Speed of light and sound
Casharka 2: Properties of waves and equation of wave motion
- Properties of waves
- Rectilinear propagation
- Reflection
- Refraction
- Diffraction
- Interference
- Superposition principle
- Stationary waves
- Strings fixed at both ends
- Strings fixed at one end
- Terms of wave motion
- The wave equation
- Lesson exercise
- Chapter exercise
Casharka 1: Introduction to sound waves
- Introduction to sound waves
- Sound wave
- Speed of sound in different media
- Conditions for hearing sound
- Sources of sound waves
- Measuring the speed of sound
- Lesson exercise
- Speed of sound
Casharka 2: Reflection of Sound and Echo
- Reflection of sound
- Echo
- Uses of echo
- Conditions for formation of echoes
- Echo calculations
- Laws of reflection of sound
- Applications of reflection of sound
- Reverberation
- Lesson exercise
Casharka 3: Properties of sound
- Properties of sound
- Intensity and loudness
- Intensity level
- Frequency and pitch
- Harmonic content and quality
- Range of audibility
- Infrasonic sounds
- Ultrasonic sounds
- Ultrasound
- Uses of ultrasound
- Infrasound and ultrasound
- Forced vibrations
- Resonance
- Measuring the speed of sound using resonance
- Conditions for resonance
- Examples of resonance
- Standing waves in pipes
- Harmonic frequency
- Pipes with two open ends
- Pipes with one open and one closed end
- Vibrating strings
- Doppler effect
- Pitch
- Quality
Casharka 1: Reflection of light on plane surface
- Introduction
- Common characteristics of light
- Reflection of light
- Types of reflection of light
- General definitions about reflection
- Laws of reflection
- Normal incidence
- Image formed by plane mirrors
- Inversion and lateral inversion
- Differences between virtual and real image
- Characteristics of an image formed in a plane mirror
- Image formed by two plane mirrors
- Uses of plane mirror
- Reflecting periscope
- Uses of reflecting periscope
- Disadvantages of reflecting periscope
- Lesson exercise
Casharka 2: Reflection of light at curved surface
- Reflection of light at curved surface
- Concave mirrors and convex mirrors
- General definitions for spherical mirrors
- Concave mirror as converging mirror
- Convex mirror as diverging mirror
- Principal focus
- Focal length and radius of curvature
- Focal plane
- Graphical construction of images
- Rules for drawing images in a concave mirror
- Object at infinity, rays parallel to the principal axis
- Object at infinity, rays not parallel to the principal axis
- Object beyond the centre of curvature
- Object at the centre of curvature
- Object between the centre of curvature and the principal focus
- Object at the principal focus
- Object between the principal focus and the pole
- Summary of images formed by a concave mirror
- Rules for drawing images in a convex mirror
- Formation of images in a convex mirror
- Uses of concave mirrors
- Uses of convex mirrors
- Numerical problems on spherical mirrors
- Lesson exercise
- Chapter exercise
Casharka 1: Refraction of light in media
- Introduction to refraction
- Refraction of light through a glass slab
- Terms about refraction
- Laws of refraction (Snell's law)
- Refractive index and speed of light
- Lateral displacement
- Optical density
- Simple effects of refraction
- Critical angle and total internal reflection
- Applications of total internal reflection
- Lesson exercise
- Chapter exercise
Casharka 2: Refraction by spherical lenses
- Introduction to lenses
- Concave lenses
- Convex lenses
- Simple terms used in lenses
- Rules for drawing images in a concave lens
- Images formed by a concave lens
- Rules for drawing images in a convex lens
- Images formed by a convex lens
- Sign convention for lenses
- Lens formula and magnification
- Numerical problems on lenses
- Power of lenses
- Unit of power of lens
- The power of two or more lenses
- Lesson exercise
- Chapter exercise
Casharka 3: Optical instruments
- Simple microscope (magnifying glass)
- Parts of a microscope
- Photographic camera
- Human eye
- Accommodation of the eye
- Defects of vision and their correction
- Short-sightedness or myopia
- Correction of short-sighted eye
- Long-sightedness or hypermetropia
- Correction of long-sightedness
- Presbyopia
- Advantages of having two eyes in humans
- Lesson exercise
- Chapter exercise
Casharka 1: Refraction of light through a glass prism
- Introduction
- Refraction of light through a glass prism
- Dispersion of light by glass prism
- Recombination of spectrum colours to give white light
- What causes dispersion of white light?
- Monochromatic light
- Polychromatic light
- Rainbow
- Atmospheric refraction
- Scattering of light
- Common phenomena of atmospheric scattering
- Lesson exercise
- Chapter exercise
Casharka 2: Colours and pigments
- Colours and pigments
- Pigment
- Colour of opaque object in white light
- Colour of transparent objects in white light
- Colours of opaque objects in coloured light
- Using filters of primary colours
- The colour of transparent objects in coloured light
- Mixing of colours
- Pair of complimentary colour
- Colour mixing as an additive process
- Mixing pigments
- Primary pigment
- Lesson exercise
- Chapter exercise
Casharka 3: Invisible spectrum
- Invisible spectrum
- Infrared spectrum
- Sources of infra-red radiation
- Properties of infra-red radiations
- Uses of infra-red rays
- Ultra violet spectrum
- Sources of ultra-violet radiation
- Properties of ultra-violet radiations
- Uses of ultraviolet radiations
- Lesson exercise
- Chapter exercise
Casharka 1: Electromagnetic induction
- Introduction
- Electromagnetic induction
- Applications of electromagnetic induction
- Magnetic flux
- Induced electromotive force (emf)
- Experiment: induced current
- Lesson exercise
- Chapter exercise
Casharka 2: Faraday's Law of Induction
- Faraday's law of induction
- Real life applications of Faraday's law
- Lesson exercise
Casharka 3: Lenz's law
- Lenz's law explained
- Experiment to verify Lenz's law
- Finding the direction of induced current
- Applications of Lenz's law
- Lesson exercise
Casharka 1: Alternating current (AC)
- Introduction
- Current and voltage of AC
- Power dissipated by an alternating current
- Root mean square values
- Electric generator
- AC generator
- Principle of AC generator
- Work of AC generator
- Lesson exercise
- Chapter exercise
Casharka 2: Simple AC Circuits
- Simple AC circuits
- AC circuit through resistance
- AC circuit through capacitor
- AC Circuit through Capacitor
- AC Circuit through Inductor
- Example 8.5
- Example 8.6
- Practice
- Lesson exercise
- Chapter exercise
Casharka 3: Transformers
- Transformers
- Transformer Construction
- Principles of transformers
- Energy losses
- Transformer rule
- Step up and step down transformers
- Power distribution
- Example 8.7
- Example 8.8
- Example 8.9
- Practice
- Lesson exercise
- Chapter exercise
Casharka 1: The meaning of electronics
- The meaning of electronics
- Energy bands
- Insulators
- Conductor
- Semiconductors
- Functions of electronic devices
- Lesson exercise
- Chapter exercise
Casharka 2: Semiconductors
- Semiconductors
- Properties of semiconductor
- Effect of temperature on semiconductors
- Commonly used semiconductors
- Holes and electrons
- Types of Semiconductor
- Intrinsic Semiconductor
- Extrinsic semiconductor
- Types of impurities
- N-type semiconductor
- P-type semiconductors
- Uses of semiconductor in everyday life
- Lesson exercise
- Chapter exercise
Casharka 3: Semiconductor device and logic gates
- PN Junction
- Applying voltage across PN-Junction
- Forward biasing
- Reverse biasing
- Diode
- Applications of diodes
- Transistors
- Types of transistors
- Naming the transistor terminals
- Applications of Transistors
- Logic gates
- Basic logic gates
- AND gate
- OR gate
- NOT gate
- Working principle of logic gates
- Uses of logic gates
- Lesson exercise
- Chapter exercise
Casharka 1: Electrons and photons
- Introduction
- Cathode rays
- Cathode ray oscilloscope
- Thermionic emission
- Properties of cathode rays
- Electron kinetic energy and the electron volt
- Example 10.1
- Practice
- Photoelectric Effect
- Factors affecting Photoelectric Emission
- Planck's equation and photon energy
- Example 10.2
- Example 10.3
- The work function
- Example 10.4
- Speed of cathode rays
- Einstein's photoelectric equation
- Example 10.5
- De Broglie's equation
- Lesson exercise
Casharka 2: Electromagnetic spectrum
- Electromagnetic spectrum
- Photon energy
- Gamma radiation and X-rays
- Ultraviolet, visible light, infrared and radio
- Generation of electromagnetic waves
- Properties of electromagnetic waves
- Properties of X-rays
- Lesson exercise
- Chapter exercise
Casharka 1: Atomic structure
- Atomic structure
- Atomic models
- Main equations of Bohr model
- Isotopes and isobars
- Lesson exercise
Casharka 2: Nuclear mass and binding Energy
- Nuclear physics
- Mass and energy
- Binding energy and mass defect
- Nuclear force
- Lesson exercise
Casharka 3: Radioactivity
- Radioactivity
- Effects of fields on radiations
- Alpha particles
- Beta particles
- Gamma rays
- Penetrating power
- Uses of radioactivity
- Hazards of radioactivity
- Lesson exercise
Casharka 4: Nuclear reactions and half-life
- Nuclear reactions
- Nuclear fission
- Nuclear fusion
- Half-life
- Lesson exercise
- Chapter questions
Imtixaanadii qaranka ee hore
Imtixaanadii dhabta ahaa ee qaranka Fasalka 4aad ee sannadihii hore. Ku gal adigoo waqti leh, kadibna arag jawaab kasta iyo sharaxeeda.
- Imtixaanka qaranka 2024/202559 su'aalood, 100 dhibcood, 120 daqiiqo
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- Imtixaanka qaranka 202148 su'aalood, 100 dhibcood, 120 daqiiqo
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Waxa ugu badan ee imtixaanka qaranka laga keeno
Cutubyada imtixaanadii hore ay wax badan ka weydiiyeen, marka loo eego dhibcaha. Kuwan horta dib u eeg.
- Cutubka 1. Oscillatory Motion86 dhibcood
6 ka mid ah 6 imtixaan: 2018, 2020, 2021, 2022, 2024, 2024/2025
- Cutubka 5. Refraction of Light75 dhibcood
6 ka mid ah 6 imtixaan: 2018, 2020, 2021, 2022, 2024, 2024/2025
- Cutubka 4. Reflection of light73 dhibcood
6 ka mid ah 6 imtixaan: 2018, 2020, 2021, 2022, 2024, 2024/2025
- Cutubka 6. Dispersion of light70 dhibcood
6 ka mid ah 6 imtixaan: 2018, 2020, 2021, 2022, 2024, 2024/2025
- Cutubka 3. Sound Waves65 dhibcood
6 ka mid ah 6 imtixaan: 2018, 2020, 2021, 2022, 2024, 2024/2025
- Cutubka 2. Wave Motion61 dhibcood
5 ka mid ah 6 imtixaan: 2018, 2020, 2021, 2024, 2024/2025
- Cutubka 11. Nuclear Physics46 dhibcood
6 ka mid ah 6 imtixaan: 2018, 2020, 2021, 2022, 2024, 2024/2025
- Cutubka 7. Electromagnetic induction34 dhibcood
4 ka mid ah 6 imtixaan: 2021, 2022, 2024, 2024/2025
Koorso la socota maaddadan
Hordhaca Fiber Optics
Fiisigiska shaqada: sida fiber optic-ku u qaado iftiinka iyo xogta.
11 USDArag koorsada
Tababarku waa bilaash, koorso qaado ama ha qaadan.
Su'aalo tusaale ah
Cutubka 2, isku day
Waves on a pond are generated by a pebble thrown into still water. Which shapes can such waves have?
Riix doorasho si aad jawaabta u aragto.
Cutubka 3, isku day
When you put your fingers on your throat as you speak, you feel vibrations. What does this show?
Riix doorasho si aad jawaabta u aragto.
Cutubka 4, isku day
Objects that emit light by themselves are called:
Riix doorasho si aad jawaabta u aragto.
Su'aalaha ardaydu weydiiyaan
Isu diyaarinta imtixaanku run ahaantii ma bilaash baa?
Haa. Tababarka iyo imtixaanka buuxa ee waqtiga leh waa bilaash, bilaashna way ahaanayaan. Waxaad u baahan tahay oo keliya akoon bilaash ah, si jawaabahaaga iyo horumarkaaga loo kaydiyo.
Su'aaluhu xaggee ka yimaadeen?
Su'aal kasta waxaa laga qoray buugga ardayga ee Fasalka 4aad ee dugsiyada laga dhigo, cutub cutub iyo cashar cashar. Jawaab kastaa waxay tusaysaa bogga buugga ay ka timid, si aad ugu noqoto oo aad u akhrido.
Kuwani ma imtixaanno hore baa?
Maya. Kuwani waa su'aalo tababar oo raacaya buugga, ma aha nuqullo imtixaannadii hore ee dowladda. Waxay kugu tababarayaan wax kasta oo buuggu daboolo, si aad maaddada u taqaanno wax kasta oo lagu weydiiyo.
Ma arki doonaa isla su'aasha mar kale?
Maya, ilaa lagu siiyo su'aal kasta oo ku jirta cutubyada aad dooratay. Intaas kadib, kuwii aad khaldday ayaa marka hore soo noqonaya.
Sideen ku ogaanayaa inaan diyaar ahay?
Markaad 20 su'aalood ka jawaabto cutub, waxaa lagu siinayaa qiimayn cutubkaas. Diyaar waxaa loola jeedaa 75 boqolkiiba ama ka badan cutub kasta, ma aha celcelis fiican oo keliya. Imtixaanka buuxa ee waqtiga leh wuxuu ku tusayaa sida aad tahay xaaladda imtixaanka.
Ma ku isticmaali karaa taleefankayga?
Haa. Wuxuu ka shaqeeyaa browser-ka taleefan kasta. Ma jiraan muuqaallo la soo dejinayo: su'aal, doorashooyinkeeda iyo sharaxaadda.
Ma inaan koorso iibsado baa?
Maya. Tababarku kuma xirna koorso. Mararka qaar waxaan kuu soo jeedinaynaa hal koorso oo ku habboon sida aad tahay. Waad iska dhaafi kartaa.
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