Question

At constant pressure certain quantity of water at 24*C is heated. It was observed that the rise of temperature was found to be 4*C per min. Calculate the time required to rise the temperature of water at 100*C at sea level.

Answer 1

Its from progression..
24°+28+32+----+100 This the series of A.p
Now take a=24 and d=4 and Tn=100 and then apply the formula
Tn=a+(n-1)d and substitute the values and you will get the answer n=20..

Answer 2

Answer:

The time required to rise the temperature of water at 100 degree C at sea level is 20 minute.

Step-by-step explanation:

Given : At constant pressure certain quantity of water at 24 degree is heated it was observed that the rise of temperature was found to be 4 degrees Celsius per minute.

To find : The time required to raise the temperature of water to 100 degree Celsius at sea level.

Solution :

The temperature of water is at 24 degree and raised by 4 degree per minute. This situation will make an arithmetic progression.

Series be like 24, 28 , 32, 36, ....100

In this series a=24 , d= 4 , $T_n=100$

We have to find the value of n,

The formula to find term is

$T_n=a+(n-1)d$

$100=24+(n-1)4$

$76=(n-1)4$

$\frac{76}{4}=(n-1)$

$19=(n-1)$

$n=20$

The time required to rise the temperature of water at 100 degree C at sea level is 20 minute.