The time between 7:00 to 7:30 such that the hour hand and the minute hand of a clock are perpendicular to each other is

1
\(7:22\frac{8}{{11}}\)
2
\(7:21\frac{8}{{11}}\)
3
\(7:21\frac{9}{{11}}\)
4
\(7:21\frac{{10}}{{11}}\)

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