2.6 sec (look it up) for more accurate

According to Charles law, if pressure remains constant, volume varies directly with temperature. so we can infer that :

So, we can use this formula to find out the final temperature of the gas ~
Note : Take temperature in Kelvin ( 100°C = 373 K )




Now, convert it to Celsius ~
i.e 746 - 273 = 473° C
So, the final temperature of the gas will be equal to 473° C
Answer:
B. For a gas in a closed container at a constant temperature, the product of the pressure and the volume remains constant.
Explanation:
The rest are societal laws, as they are telling you something you should avoid or follow.
Hope this helps :)
Answer:
Explanation:
Given
Overall magnification 
One lens magnification is 
suppose the magnification of other lens is 
A compound lens is made up of series of lenses either of same or of different magnification so
is given by

If
lens is replaced by
lens then total magnification is

Answer:
1000s or 16.66667 minutes
Explanation:
10km = 10,000m
Time = distance/speed
= 10000/10
=1000s or 16.66667 minutes