The correct answer is option 1, which states that the tires of aircraft are made of conducting rubber so that the charge accumulated on the aircraft during flight, due to rubbing the air, can easily be transferred to the ground upon landing.

Explanation:

When an aircraft moves through the air, friction between the aircraft and the air molecules can cause the accumulation of static charge on the aircraft`s surface. This is similar to the way static electricity builds up on our bodies when we walk on a carpet.

If the aircraft were to remain charged after landing, it could present a safety hazard. For example, when the aircraft comes into contact with the ground, such as during the landing gear touching down, the accumulated static charge could discharge and potentially cause sparks, which could ignite combustible materials or damage sensitive electronic equipment.

To prevent this, the tires of aircraft are made of conducting rubber. Conducting rubber contains carbon or other conductive materials that allow the static charge to quickly dissipate through the tires and into the ground upon landing. This ensures that the aircraft remains grounded and the static charge is safely discharged.

Option 2 is incorrect because it mentions that the conducting rubber is used to transfer the charge accumulated due to the operation of various electronic equipment in the aircraft during flight. However, the primary reason