Triple Physics Nov Mock 2024

What is required for a nuclear fusion reaction to occur?

• High temperature and pressure
• Controlled chain reaction
• Production of radioactive waste
• Emission of daughter nuclei

Answer explanation

Jupiter is a gas giant made primarily of hydrogen and helium. Unlike terrestrial planets that have solid surfaces, gas giants like Jupiter don't have a well-defined solid surface, allowing them to accumulate more mass in a gaseous form. This composition has allowed Jupiter to grow significantly larger than planets with solid surfaces.

What is redshift in the context of light from distant galaxies?

• Shift towards the red end of the spectrum
• Light moving towards the blue end
• Light maintaining its original color
• Spectrum becoming monochromatic

Which of the following is a type of ultraviolet (UV) radiation?

• UVA
• Infrared
• Gamma
• Microwaves

What is the role of radiation in treating cancer?

• Destroying tumor cells
• Enhancing cell growth
• Improving blood flow
• Strengthening cell walls

Which particle is emitted during Beta minus radioactive decay?

• Electron
• Neutron
• Photon
• Molecule

How do positrons assist in locating tumors in a PET scan?

• Emitted positrons are detected around the tumor
• They are absorbed by healthy tissue
• They generate heat detected externally
• They form bonds with radioactive isotopes

Which type of radiation is used to detect forged banknotes?

• UV
• Gamma
• Alpha
• Visible light

What physical quantity does a half-life measure?

• Decay rate of a radioactive isotope
• Mass of radioactive substance
• Size of radioactive particles
• Intensity of emitted radiation

What is one main difference between irradiation and contamination?

• Contamination involves radioactive material in the body
• Irradiation involves swallowing radioactive material
• Contamination occurs only in hospitals
• Irradiation does not involve any radioactive exposure

Which of the following radiations is most likely to penetrate deep into the body?

• Gamma rays
• Alpha particles
• Beta particles
• Microwaves