If the poured liquid is relatively hotter or colder in comparison to the tumbler, it will break. When hot water is poured into a tumbler there is an uneven increase in the thermal expansion of the walls of the vessel.
Answer: Option 1
When hot liquid is poured into a thick glass tumbler, it cracks because glass is a bad conductor of heat so only inner surface expands.
Answer: Option 3
A flick is given to the card with finger, the card flies away and the coin falls in the tumbler. It is explained by saying that due...
Answer: Option 3
The inside of the bulb being a vacuum, the outside air rushes in when the bulb is broken. The vibrations of the rushing air molecules produce the...
Answer: Option 3
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because cohesion of mercury...
Answer: Option 3
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because cohesion of mercury...
Answer: Option 1
Getting the information well in advance clearly suggests that adequate water be saved for the crisis by proper management and moderate cuts in water supply. Cultivating alternate...
Answer: Option 1
A trickling filter, also known as percolating filter, is an artificial bed of stone or broken brick material over which waste water or sewage is allowed to...
