Question

Multiple Choice Questions (MCQs): Choose the correct answer for each of the following.
1. A balance wheel is used in
(a) hourglass.
(b) wall clock.
(c) quartz watch.
(d) stopwatch.
2. A car is moving at a speed of 30 km/h and a truck is moving at a speed of 40 km/h. The distance-
time graph will show
(a) one straight line.
(b) two parallel straight lines.
(c) two straight lines at different angles. (d) a zigzag line.
3.The standard unit of speed is
(a) km/h.
(b) m/s.
(c) m/h.
(d) km/s.​

Answer 1

Answer:

1. (b)

2. (c)

3. (b)

Explanation:

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