Here a combination of the alphabets followed by four alternatives (1), (2), (3), and (4) is given. Choose the alternative which most closely resembles the water images of the given combination:
NUCLEAR
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) →
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In a water image every letter is turned upside down (its top and bottom change places), while the order of the letters from left to right stays the same. Only letters that are symmetrical about a horizontal line through their middle keep their shape. In NUCLEAR these are C and E; N, U, L, A and R turn upside down, as shown below (the word above the dashed water line, its water image below it).

Tip: The capital letters that look the same in water are B, C, D, E, H, I, K, O, X (horizontal symmetry); a group made only of these is unchanged in its water image.