Home
/
Student Questions

Every question IB students actually ask.

Answered in under a minute.

Physics Student Questions - Page 6 | RevisionDojo

FeaturesSubjectsPricing Schools

Join 650k+ students breezing through the IBReady to breeze through the IB?

Footer

General

Download apps
For parents
For schools
Pricing
Gift RevisionDojo
Tutoring
IB syllabus
MYP syllabus
Blog
Student Questions

Features

Question Bank
Test Builder & Exam Mode
Predicted Papers
Past Papers
Study Notes
Interactive Lessons
Flashcards
Jojo AI Tutor
Coursework Studio
View all features

Research

All research
Jojo AI vs leading AI study tools
2026 State of Learning Survey
2025 State of Learning Survey
IB Moderation Analysis
Jojo AI vs ChatGPT
Jojo AI vs Gemini
Jojo AI vs Perplexity
Jojo AI vs Claude
Jojo AI vs Poe

Platform

About RevisionDojo
RevisionDojo vs Others
Content philosophy
Trustpilot
Join usWe're hiring
Student Ambassador
Help center
Contact us

IB Subjects

Arabic A
Arabic A Lit
Arabic ab initio
Arabic B
Biology
Business Management
Chemistry
Chinese A Lang & Lit
Chinese B
Computer Science (CS)
Computer Science (First Exam 2027)
Design Technology (DT)

© 2022 - 2026 RevisionDojo (MyDojo Inc)

RevisionDojo was developed independently of the IBO and as such is not endorsed by it in any way.

/
/
Physics

Terms of Service

Design Technology (First Exam 2027)

Digital Society (DS)

English A Lang & Lit

Environmental systems and societies (ESS)

French ab initio

French B
Geography
German A
German A Lit
German ab initio
German B
Global Politics
History
History (First Exam 2028)
Mathematics Analysis and Approaches (AA)
Mathematics Applications & Interpretation (AI)
Philosophy
Physics
Psychology
Psychology (First Exam 2027)
Spanish A
Spanish A Lit
Spanish ab initio
Spanish B
Sports, exercise and health science (SEHS)
Theory of Knowledge (TOK)
World Religions

Arabic A
Arabic A Lit
Arabic ab initio
Arabic B
Biology
Business Management
Chemistry
Chinese A Lang & Lit
Chinese B
Computer Science (CS)
Computer Science (First Exam 2027)

Design Technology (DT)
Design Technology (First Exam 2027)
Digital Society (DS)
Economics
English A Lang & Lit
English A Lit
English B
Environmental systems and societies (ESS)
French A
French A Lit
French ab initio

French B
Geography
German A
German A Lit
German ab initio
German B
Global Politics
History
History (First Exam 2028)
Mathematics Analysis and Approaches (AA)
Mathematics Applications & Interpretation (AI)

Philosophy
Physics
Psychology
Psychology (First Exam 2027)
Spanish A
Spanish A Lit
Spanish ab initio
Spanish B
Sports, exercise and health science (SEHS)
Theory of Knowledge (TOK)
World Religions

MYP Subjects

MYP Biology
MYP Chemistry
MYP Design
MYP English Lang & Lit
MYP Extended Mathematics

MYP History
MYP Individuals & Societies
MYP Integrated Sciences
MYP Physics
MYP Standard Mathematics

MYP Biology
MYP Chemistry
MYP Design

MYP English Lang & Lit
MYP Extended Mathematics
MYP History

MYP Individuals & Societies
MYP Integrated Sciences
MYP Physics

MYP Standard Mathematics

Get it on Google Play

GDPR compliant

Home

Student Questions

Ask Jojo something new

Physics

C.5 Doppler effect

How Does the Doppler Effect Show That Galaxies Are Moving and the Universe Is Expanding?

Learn how redshift, spectral lines, and the Hubble and Lemaître law provide evidence that galaxies are moving and the universe is expanding.

D.1 Gravitational fields

What Are Kepler's Three Laws of Planetary Motion?

Learn Kepler's three laws of planetary motion, their physical meaning, key equations, and the exam points required for IB Physics D.1.

121 144 257

Previous page
1
5
6
7
11
Next page

Jojo pointing the way

C.5 Doppler effect

What's the Difference in the Doppler Equation for a Moving Source vs a Moving Observer? (HL)

Learn how moving-source and moving-observer Doppler equations differ in IB Physics HL, with sign choices, mechanisms, examples, and exam tips.

C.5 Doppler effect

How Is the Doppler Effect Used in Medical Ultrasound and Radar? (HL)

Learn how Doppler ultrasound measures blood flow and radar measures target speed using reflected-frequency shifts, with IB Physics HL equations and examples.

C.5 Doppler effect

How Do You Calculate the Doppler Shift for Light (Δf/f ≈ v/c)?

Learn how to calculate the Doppler shift for light using Δf/f ≈ v/c, choose the correct sign, and show clear working in IB Physics exam questions.

B.5 Current and circuits

How Do You Calculate Electrical Power Dissipated by a Resistor?

Learn to calculate electrical power dissipated by a resistor using P = IV, I²R, or V²/R, with a worked IB Physics example for SL and HL exams.

C.5 Doppler effect

Why Does a Siren Sound Different as It Passes You?

Learn how the Doppler effect changes a siren’s observed pitch as it approaches and recedes, with precise IB Physics terminology and exam tips.

C.4 Standing waves and resonance

What Are Real-World Examples of Resonance Being Useful or Destructive?

Learn how resonance amplifies oscillations, with useful examples in instruments and radio tuning, and destructive effects in structures for IB Physics.

C.4 Standing waves and resonance

How Do You Calculate the Wavelength/Frequency of the Nth Harmonic in a String or Pipe?

Learn the IB Physics formulas for calculating wavelength and frequency of harmonics in fixed strings, open pipes, and pipes closed at one end.

C.5 Doppler effect

What Is the Doppler Effect?

Learn how relative motion changes observed frequency and wavelength in the Doppler effect, including sound, light, redshift, and IB exam equations.

B.5 Current and circuits

What Is Internal Resistance of a Cell and How Does It Affect the Circuit?

Learn how a cell's internal resistance reduces terminal potential difference, limits current, causes heating, and appears in IB Physics calculations.

B.5 Current and circuits

What's the Difference Between Ohmic and Non-Ohmic Conductors?

Learn how ohmic and non-ohmic conductors differ through resistance, current-voltage characteristics, temperature, and IB exam graph analysis.

C.4 Standing waves and resonance

What's the Difference Between Light, Critical, and Heavy Damping?

Learn how light, critical, and heavy damping affect oscillations, return to equilibrium, amplitude, and resonance in IB Physics C.4.

C.4 Standing waves and resonance

What Is Resonance and What Is Natural Frequency?

Learn how natural frequency determines free oscillations and how resonance produces maximum amplitude in driven IB Physics oscillating systems.

C.4 Standing waves and resonance

How Does Damping Affect the Amplitude and Frequency of a Resonating System?

Learn how damping reduces resonant amplitude, broadens the resonance curve, and slightly lowers resonant frequency in IB Physics C.4 exam questions.

B.5 Current and circuits

How Do You Calculate Total Resistance in Series and Parallel Circuits?

Learn to calculate total resistance in series and parallel circuits using IB Physics formulas, worked examples, checks, and exam advice for SL and HL.

B.5 Current and circuits

How Do Thermistors and Light-Dependent Resistors (LDRs) Work?

Learn how thermistors and LDRs change resistance, how they operate in potential dividers, and how to analyse them in IB Physics exam questions.

C.4 Standing waves and resonance

What Are Nodes and Antinodes?

Learn what nodes and antinodes are, how they form in standing waves, their spacing and phase relationships, and how IB Physics C.4 tests them.

C.4 Standing waves and resonance

How Does Superposition of Two Waves Create a Standing Wave?

Learn how two identical waves travelling in opposite directions superpose to form fixed nodes, antinodes and a standing wave in IB Physics C.4 exam questions.

C.4 Standing waves and resonance

What Do Standing Wave Patterns Look Like in Strings vs Pipes (Open/Closed)?

Learn how nodes, antinodes, wavelengths, and allowed harmonics differ for standing waves in strings, open pipes, and closed pipes in IB Physics.

C.3 Wave phenomena

What Is the Diffraction Grating Equation (nλ = d sin θ)? (HL)

Learn the HL diffraction grating equation, define each variable, calculate grating spacing and diffraction angle, and avoid IB Physics exam errors.

C.3 Wave phenomena

How Does a Diffraction Grating Work? (HL)

Learn how a diffraction grating forms sharp interference maxima, apply the grating equation, and avoid common IB Physics HL calculation mistakes confidently.

C.1 Simple harmonic motion

What's the Difference Between Period, Frequency, and Angular Frequency?

Learn how period, frequency, and angular frequency differ in IB Physics, how to convert between them, and which units to use correctly in SHM questions.

C.3 Wave phenomena

How Do You Calculate Fringe Spacing in a Double-Slit Experiment?

Learn how to calculate double-slit fringe spacing using s = λD/d, convert units correctly, and apply the formula accurately in IB Physics SL and HL exams.

Read the answer

Showing

to

of

questions

Still stuck? Ask Jojo directly

Ask Jojo directly and keep exploring the question.

Ask Jojo directly

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer

Read the answer