Q1 Drawbridge : A drawbridge is a bridge that can be moved in order to stop or allow passage across it. Modern drawbridges are often built across large, busy waterways. They can be lifted to allow large ships to pass or lowered to allow land vehicles or pedestrians to crose. A drawbridge is 60 metre long when stretched across a river. As shown in the figure, the two sections of the bridge can be rotated upward through an angle of 30∘ (i) If the water level is 5 metre below the closed bridge, find the height h between the end of a section and the water level when the bridge is fully open. (ii) How far apart are the ends of the two sections when the bridge is fully opened, as shown in the figure?

From a point on a bridge across a river the angle of depression of the banks on opposite sides of the river are 30° and 45° respectively. If the bridge is at the height of 30 m from the banks, the width of the river is

The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:

The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:200 m225 m245 m250 m

A train passes two bridges of lengths 500m and 250m in 100 seconds and 60 seconds respectively. The length of the train isa.250mb.125mc.120md.152m

A train 200 meters long running at 54 km/h takes 30 seconds to pass a bridge. The length of the bridge in meters is160 m250  m150 m65 m