Which of the following statements is NOT correct about surface tension?
Statement 3 is incorrect. At room temperature, the surface tension of water is actually higher than that of ethyl alcohol. For example, water at 20°C has a surface tension of 72.8 dynes/cm, while that for ethyl alcohol is 22.3 dynes/cm.
A bicycle moves at 30 km/h and needs 9 hours to complete a journey. A van completes the same journey in 3 hours. If the bicycle's speed is increased by ...
A man travels some distance at a speed of 20 km/hr and returns at a speed of 15 km/hr. If the total time taken by him is 2 hrs 20 min, the distance is
A boy goes to school at 4 km/Hr and return at a speed of 3 km/hr. If he takes 7 hrs in all. Find the distance from his village to school?
How much time a train 200 metres long running at the speed of 72 km/hr take to cross a bridge 180 metres in length?
If a car runs at 36 km/hr, it reaches its destination late by 15 minutes but if runs at 45 km/hr it is late by 9 minutes. What is the correct time for t...
A train running at 72 km/hr takes 20 seconds to pass a platform and the train takes 6.5 seconds to pass a car running at 36 km/hr in the opposite direct...
Two trains X and Y start at the same time in the opposite direction from two points P and Q and arrive at their destinations 25 and 16 hours respectivel...
A man travels some distance at a speed of 12 km/hr and returns at a speed of 9 km/hr. If the total time taken by him is 4 hrs 40 min, the distance is
The speed of ‘A’ and ‘B’ is 65 km/hr and 40 km/hr, respectively. If the distance covered by ‘A’ in ‘x&r...
Train P starts from Lucknow to Dehradun at 11:55 am with an average speed of 30 m/s. Train Q starts from Dehradunto Lucknowat 1:35 pm with an average sp...
