1.

A student heats some amount of tap water in a calorimeter to a temperature of nearly 50ºC above the room temperature. He then records the temperature of this water as it is cooling down at regular intervals of 2 minutes each. He tabulates his observations as follows : Time (in minutes) → 0 2 4 6 8 10 Temperature (in ºC) → t1 t2 t3 t4 t5 t6 He is likely to observe that :(1) (t1 − t2) > (t3 − t4) > (t5 − t6)(2) (t1 − t2) = (t3 − t4) = (t5 − t6)(3) (t1 − t2) < (t3 − t4) < (t5 − t6)(4) (t1 − t2) < (t3 − t4) > (t5 − t6)

Answer» A student heats some amount of tap water in a calorimeter to a temperature of nearly 50ºC above the room temperature. He then records the temperature of this water as it is cooling down at regular intervals of 2 minutes each. He tabulates his observations as follows :





















Time (in minutes) → 0 2 4 6 8 10
Temperature (in ºC) → t1 t2 t3 t4 t5 t6

He is likely to observe that :

(1) (t1 t2) > (t3 t4) > (t5 t6)

(2)
(t1 t2) = (t3 t4) = (t5 t6)

(3)
(t1 t2) < (t3 t4) < (t5 t6)

(4)
(t1 t2) < (t3 t4) > (t5 t6)


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