ib23m_hltz2#2 last 20 from May 2023 HL/tz2

Question 1 White light is incident on gas at very low pressure. The light passing through the gas is analysed. What phenomenon is being investigated?

• A Absorption spectrum
• B Emission spectrum
• C Photoelectric effect
• D Polarization

Question 2

• A 30 s
• B 40 s
• C 60 s
• D 80 s

Question 3

• A I and II only
• B I and III only
• C II and III only
• D I, II and III

Question 4

• A Baryon number
• B Charge
• C Lepton number
• D Strangeness

Question 5

• A 3/2
• B 9/2
• C 6
• D 18

Question 6 What is not correct about a photovoltaic cell?

• A It has an output power that is related to the surface area of the cell.
• B It generates an alternative current.
• C It absorbs energy over a range of photon frequencies.
• D It can be used to store energy in a secondary cell.

Question 7

• A 70 Wm⁻²
• B 90 Wm⁻²
• C 100 Wm⁻²
• D 130 Wm⁻²

Question 8

• A
• B
• C
• D

Question 9

• A decrease increase
• B decrease decrease
• C increase decrease
• D increase increase

Question 10

• A zero minimum positive value
• B maximum minimum positive value
• C zero maximum positive value
• D maximum maximum positive value