Errata for TYS_Physics

Errata SL Education TYS 2023/P1/Q3 Answer is A instead of D, typo in the solution 2023/P2/Q8diii The length of the rod will increase, due to the great difference in acceleration of free fall at the head and tail of the rod. The TYS solution mentioned that there is negligible difference which is wrong. 2020/P2/Q4ci TYS solution missed out the power of ten in the axis. In addition, wavelength of light should be ~10 -7 m. 2020/P3/Q8a In explosion-type collisions, relative speed of approach is 0. In completely inelastic collisions, relative speed of separation is 0. For an elastic collision, relative speed of approach = relative speed of separation, therefore for an inelastic collision, the relative speeds are not equal. 2019/P1/Q24 Answer is D , not that one stated in solution. When resistance of variable resistor is set to zero, the current will bypass the 1.0 k Ω resistor above it, hence effective resistance of the circuit will be just 1.0 k Ω, with the resistor on the right having a p.d. of 12 V. When the resistance of the variable resistor is set to 1.0 k Ω, the voltmeter will read the p.d. across the 1.0 k Ω on the right which can be calculated using the potential divider formula to be 8 V. 2019/P3/Q3b Note that the solution assumes that the ideal gas is monatomic which is not necessarily true. The correct answer for this question can be obtained simply by understanding that in a cyclic process, the total change in internal energy

is zero. 2019/P3/Q4ai The explanation given is incomplete and confusing. Taking the initial depth that tube is submerged to be h . At equilibrium, the resultant of weight and upthrust will be equal to zero. Mg = ρ 𝐴ℎ𝑔 When the tube is displaced downwards, the upthrust will increase and resultant force will be upwards. F net = ρ 𝐴 ( ℎ + 𝑥 ) 𝑔 − 𝑀𝑔 = ρ 𝐴𝑥𝑔 2019/P3/Q6biii The graph in the solution has wrong shape. The correct graph is shown below According to Faraday’s law, the induced e.m.f. Is directly proportional to the rate of change of magnetic flux linkage.

Since the magnetic flux density in a solenoid is directly proportional to the current flowing through it, for time 0.0 to 1.5 ms and time 3 to 4 ms, where current is changing at a constant rate, the magnetic flux density is changing at a constant rate as well. Hence by Faraday’s law, we should expect the induced e.m.f. to be constant. 2019/P3/Q7a The definition in solution did not refer to heating effect. Use the definition given here. It is equivalent to the steady direct current that converts electrical