Question

. Two students X and Y have to do their experiment on plotting the
temperature-time graph for a hot body as it cools to room temperature.
They do their experiments in the same lab, using completely identical
apparatus, take equal amounts of tap water heated up to the same
temperature, start their observations simultaneously and note the
temperature values at identically spaced intervals of time. Their
temperature-time graphs, plotted on a given graph paper, with the
same given choices of scales along the axis, are however, as shown:
The following could be the reason for this difference:
(A) Use of an overhead fan by student X.
(B) Use of an overhead fan by student Y.
(C) Less frequent stirring of water by student X.
(D) Less frequent stirring of water by student Y.
The most likely reason is :
(1) A
(2) B
(3) C
(4) D
​

Answer 1

Answer:

option B is correct bcoz when student of Y is overhead....

Answer 2

Answer:

(B) use of an overhead fan by student Y is a correct answer mark me as a brilliant plz please