850 JK-1
750 JK-1
650 JK-1
500 JK-1
Correct answer is B
Heat supplied = Heat gained
P x t = C ∆ Ø
(25 x 5 x 60)/10 = 750 JK-1
508 cm3
516 cm3
608 cm3
616 cm3
Correct answer is D
V1 = 600cm3, T1 = 27 = 273 = 300k
T2 = 35 + 273 = 308K, V2 = ?
(V)1/T1
= (V)2/T2 = V2
= (V)1/T1 x X T2
= (600 X 308)/300 = 616 cm3
the clock gians time
the accuracy of the clock is not affected
the clock losses time
the clock stops working
Correct answer is C
The elastic potential energy of the balance wheel reduces as the wheel expands, therefore the clock will loose time.
The thermometric properties of a thermocouple is the change in?
equivalent resistance
electromotive force
colour
pressure
Correct answer is B
Temperature difference between hot and cold junctions of thermocouple is proportional to the emf. generated
(1)/3
(2)/3
(1)/5
(2)/5
Correct answer is B
relative density = (weight of substance )/weight of equal volume of water = (4 - 2)/5 - 2 = (2)/3