Question

1.
The speed of a swimmer in still water is
20 m/s. The speed of river water is 10 m/s
and is flowing due east. If he is standing
on the south bank and wishes te cross the
river along the shortest path, the angle at
which he should make his strokes wirt
north is given by
(a) 45° west
(b) 30° west
(d) 60° west
(c) 0°
(NEET 2019).

​

Answer 1

Answer:

45° West

Seoul Subway Line 5 of the Seoul Metro, dubbed the purple line, is a long line crossing from west to the east across the Seoul National Capital Area, South Korea. It is one of two subway lines in Seoul to cross under the Han River, which is done at two points. Wikipedia

Operator: Seoul Metro

System: Seoul Metropolitan Subway

Opened: 15 November 1995

Stations: 61 (including branch line)

Number of tracks: 2

Line length: 52.3 km (32.5 mi)