The response time issue has been solved.
Yes the temperature sensor is kept closer to the object.
When I tried measuring the temperature of my laptop from 3-4 cm it gave temperature @ 40-43 degree which was correct. But for plastic bowl containing water at @75 degree
it showed temperature as -23 degree.I tried using transient correction as well.In second case may be tdie will be changing since temperature around the bowl is higher.
Is type of plastic material i am using will matter much??