The core of a transformer is laminated, so as to

The correct answer is Option (1) → reduce the energy loss due to eddy currents

The alternating flux in the iron core induces circulating eddy currents in the core itself, which waste energy as heat. The core is therefore made of thin sheets (laminations) insulated from one another; the insulating layers break the large current loops and reduce the eddy-current loss.

Option (1) reduce the energy loss due to eddy currents — Correct. Lamination increases the resistance to eddy currents and so reduces the energy lost as heat.

Note: A similar question was also asked in CUET (UG) 2026 on 30-05-2026 (Slot 2), and in CUET (UG) 2023 on 14-06-2023 (Slot 2).

NCERT (2026-27):
Transformers – “… But in actual transformers, small energy losses do occur due to the following reasons:”

Transformers – “… (iii) Eddy currents: The alternating magnetic flux induces eddy currents in the iron core and causes heating. The effect is reduced by using a laminated core.”