Question : Sound travels at 330 metres per second. The distance (in kilometres) of a thundercloud when its sound follows the flash after 10 seconds is:

Option 1: 0.33 km

Option 2: 3.3 km

Option 3: 33 km

Option 4: 33.3 km

Question : The length of a train is 330 metres and it is moving at the speed of 72 km/hr. In how much time will it take to cross a platform of length 710 metres?

Option 1: 52 seconds

Option 2: 56 seconds

Option 3: 72 seconds

Option 4: 64 seconds

Question : A train is running at a speed of 116 km/hr. The distance covered by the train (in metres) in 18 seconds is:

Option 1: 900 metres

Option 2: 1160 metres

Option 3: 508 metres

Option 4: 580 metres

Question : The upper part of a tree broken at a certain height makes an angle of 60° with the ground at a distance of 10 metres from its foot. The original height of the tree was:

Option 1: $20\sqrt{3}$ metres

Option 2: $10{\sqrt3}$ metres

Option 3: $10\left (2+{\sqrt3} \right)$ metres

Option 4: $10\left (2-{\sqrt3}\right)$ metres

Question : The time taken for a train of length 110 metres running at a speed of 72 km/h to cross a bridge of length 132 metres is:

Option 1: 9.8 seconds

Option 2: 12.1 seconds

Option 3: 12.42 seconds

Option 4: 14.3 seconds