Which of the following does NOT match?

Correct option is B

Ans: (B) Cyclotron - measures small magnitude Cyclones.

Explanation:

• A cyclotron is a type of particle accelerator used in physics to accelerate charged particles to high energies, not to measure cyclones.

Incorrect Options Explanations:

• Compass: Used for navigation and indicates north-south directions correctly.
• Actinometer: Measures the intensity of radiation, often solar radiation.
• Electroscope: Detects the presence of an electric charge accurately.

Information Booster:

• Cyclotron: Invented by Ernest Lawrence in 1930 for research in nuclear physics.