Padma, starting from east, takes a half turn clockwise. A half turn points her to the opposite direction. The opposite of east is west, so she will face west after the turn.
Class 5 Mathematics Maths-Mela Angles as Turns
Class 5 Mathematics Maths-Mela Chapter 3 Angles as Turns question answer
If Padma is facing east and makes a half turn clockwise, she rotates halfway around a circle. A half turn always makes us face the opposite direction. Since the opposite of east is west, Padma will end up facing west. This is just like a clock hand moving from 3 to 9, which also covers half a circle.
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