SL 2018 paper video solutions

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2018 IB SL

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February 1, 2026

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Prepare for IB Physics SL 2018 with live online classes, past papers, and exam-focused strategies by expert tutors. Join now.

Course Curriculum

May Time Zone 1

Q1: Fractional uncertainity in volume of sphere

01:25
Q2: Relative velocity of Boat in riverstream

02:08
Q3: Find Initial velocity in free fall motion

02:00
Q4: Free body diagram of Ladder in equilibrium

02:25
Q5: Ratio of Kinetic and Gravitational potential energy

02:48
Q6: A child throwing ball to another

03:19
Q7: Find work done when elastic wire contracts (for HL)

03:45
Q8: Identifying type of motion from different positions of Car

02:28
Q9: Find Rate of change of momentum for a block

01:52
Q10: Pressure-temperature graph

02:28
Q11: Specific heat capacity and Latent heat of vapourization

02:03
Q12: Find an expression of force exerted by ideal gas on wall

02:09
Q13: Find speed of standing wave produced by wave generator

02:15
Q14: superposition and phase difference between two waves

03:56
Q15: Interference pattern of two water waves & double slit pattern

03:23
Q16: Restoring force and displacement of SHM

03:07
Q17: Draw Kinetic energy vs time graph from equation & graph of displacement (for HL))

03:59
Q18: Find Equivalent resistance

02:02
Q19: Determine direction of magnetic force

02:44
Q20: Find through which resistance power dissipated is maximum

03:01
Q21: Find equivalent resistance of two wires of different thicknesses in series

01:57
Q22: Make Equation of tension at bottomof vertical circle

02:04
Q23: Benifit of Newton’s law of gravitation

02:20
Q25: Calculate Binding energy of oxygen

01:20
Q26: Comparing half lifes of two samples of radioactive elements

03:27
Q27: How many photones released in transition between energy levels

03:40
Q30: Find Albedo from Energy-balance diagram

02:09

May Time Zone 2

Q1: Diameter of helium nucleus according to Rutherford equation (for HL)

01:35
Q2: Vector addition of velocities of boats

02:42
Q3: Calculate percentage efficiency of motor

02:41
Q4: Free body diagram of block accelerating on rough horizontal surface

01:44
Q5: Find velocity at certain time from F-t graph

02:08
Q6: Momentum of ball at highest point of projectile motion

02:24
Q7: Average and Instantaneous speed from Graph

01:50
Q8: Pulley problem (A trolley attached with block accelerating on horizontal surface)

03:21
Q9: Comparison of Range & Time of two projectiles

03:54
Q10: Express Newton in terms of Joule and second

00:50
Q11: Power and Temperature-time graph

01:51
Q12: Internal energy and Temperature of gas

01:37
Q13: Heat transfer in thermally insulated system

01:28
Q14: Find distance between source and detector if time lag of two waves are given

02:38
Q15: Variation of velocity and acceleration of SHM from graph

03:17
Q16: Effect on speed & wavelength when wave enetrs from one medium to other

03:09
Q17: Find phase difference between two points in longitudnal wave

03:13
Q18: Calculate fringe spacing in double slit exp

02:29
Q19: Reading of Voltmeter across variable resistor when resistance is changed

03:23
Q20: Trajectory of electron in electric field

02:32
Q21: In which direction charge will deflect?

02:22
Q22: Emf of a cell and its internal resistance

01:54
Q23: Conical Pendulum and free fall motion

02:15
Q24: Calculating total activity of counter & background counts

02:32
Q25: Multiple emission of radioactive particles

02:50
Q26: Binding energy per nucleon graph

02:45
Q29: Greenhouse gases

01:05
Q30: Ratio of radius of two planets using Stephen-Boltzmann law

02:49

November Time Zone 0

Q1: unit of power in terms fundamental SI units

01:19
Q2: Calculate percentage uncertainity in density of cube

02:16
Q3: Finding Stopping Distance (SUVAT)

01:34
Q4: Absence of Air resistance on velocity of projectile

02:16
Q5: Velocity vs Displacement Graph for contantly accelerated motion

01:48
Q6: Newton’s third law (Force pair) for a block placed on another block

01:54
Q7: Work done in circular motion

03:15
Q8: Conservation of energy for Horizontal mass spring system

02:33
Q9: Find Magnitude of Impulse on ball by wall

03:09
Q10: Calculate time required by liquid for having change in temperature

02:27
Q11: Ratio of Average kinetic energy of two gases

03:06
Q12: Find ratio of temperatures of two gases

02:30
Q13: Frequency of particle in Uniform Circular motion

02:13
Q14: Nature of vibration of particles in longitudnal wave

02:53
Q15: calculate speed of wave

02:34
Q16: About equation of double slit experiment

03:37
Q17: Find ratio of lengths of two standing waves

02:06
Q19: Calculate Power dissipated when resistance is twiced

02:17
Q20: Make an expression of current in a circuit by solving combination of resistances

03:47
Q21: Find direction of resultant magnetic field due to two wires

03:08
Q22: Magnetic force behaving as a centripetal force

03:00
Q23: Find position where two field strengths are equal

03:08
Q24: Calculate percentage of undecayed nuclides after certain time

02:19
Q25: No.of neutrones vs No.of protones graph (for HL)

03:05
Q28: Role of control rods

02:10
Q29: Find Area of panel using Luminosity equation

02:49
Q30: Find Intensity of reflected light using Albedo

02:24

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SL 2018 paper video solutions

Description

Subscriptions

About Course

Course Curriculum

May Time Zone 1

Q1: Fractional uncertainity in volume of sphere

Q2: Relative velocity of Boat in riverstream

Q3: Find Initial velocity in free fall motion

Q4: Free body diagram of Ladder in equilibrium

Q5: Ratio of Kinetic and Gravitational potential energy

Q6: A child throwing ball to another

Q7: Find work done when elastic wire contracts (for HL)

Q8: Identifying type of motion from different positions of Car

Q9: Find Rate of change of momentum for a block

Q10: Pressure-temperature graph

Q11: Specific heat capacity and Latent heat of vapourization

Q12: Find an expression of force exerted by ideal gas on wall

Q13: Find speed of standing wave produced by wave generator

Q14: superposition and phase difference between two waves

Q15: Interference pattern of two water waves & double slit pattern

Q16: Restoring force and displacement of SHM

Q17: Draw Kinetic energy vs time graph from equation & graph of displacement (for HL))

Q18: Find Equivalent resistance

Q19: Determine direction of magnetic force

Q20: Find through which resistance power dissipated is maximum

Q21: Find equivalent resistance of two wires of different thicknesses in series

Q22: Make Equation of tension at bottomof vertical circle

Q23: Benifit of Newton’s law of gravitation

Q25: Calculate Binding energy of oxygen

Q26: Comparing half lifes of two samples of radioactive elements

Q27: How many photones released in transition between energy levels

Q30: Find Albedo from Energy-balance diagram

May Time Zone 2

Q1: Diameter of helium nucleus according to Rutherford equation (for HL)

Q2: Vector addition of velocities of boats

Q3: Calculate percentage efficiency of motor

Q4: Free body diagram of block accelerating on rough horizontal surface

Q5: Find velocity at certain time from F-t graph

Q6: Momentum of ball at highest point of projectile motion

Q7: Average and Instantaneous speed from Graph

Q8: Pulley problem (A trolley attached with block accelerating on horizontal surface)

Q9: Comparison of Range & Time of two projectiles

Q10: Express Newton in terms of Joule and second

Q11: Power and Temperature-time graph

Q12: Internal energy and Temperature of gas

Q13: Heat transfer in thermally insulated system

Q14: Find distance between source and detector if time lag of two waves are given

Q15: Variation of velocity and acceleration of SHM from graph

Q16: Effect on speed & wavelength when wave enetrs from one medium to other

Q17: Find phase difference between two points in longitudnal wave

Q18: Calculate fringe spacing in double slit exp

Q19: Reading of Voltmeter across variable resistor when resistance is changed

Q20: Trajectory of electron in electric field

Q21: In which direction charge will deflect?

Q22: Emf of a cell and its internal resistance

Q23: Conical Pendulum and free fall motion

Q24: Calculating total activity of counter & background counts

Q25: Multiple emission of radioactive particles

Q26: Binding energy per nucleon graph

Q29: Greenhouse gases

Q30: Ratio of radius of two planets using Stephen-Boltzmann law

November Time Zone 0

Q1: unit of power in terms fundamental SI units

Q2: Calculate percentage uncertainity in density of cube