Two substances A and B of equal mass m are he | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The rate of heat supply is constant for both substances,given by $P = \frac{dQ}{dt} = 6 \, cal \, s^{-1}$.For substance $A$,the fusion process occ

Vedclass · Accepted Answer

$8/5$

Vedclass · Answer

(C) The rate of heat supply is constant for both substances,given by $P = \frac{dQ}{dt} = 6 \, cal \, s^{-1}$.For substance $A$,the fusion process occurs at a constant temperature where the time taken is $\Delta t_A = 6 - 2 = 4 \, s$.Thus,the heat absorbed for fusion is $H_A = P 	imes \Delta t_A = 6 	imes 4 = 24 \, cal$.For substance $B$,the fusion process occurs at a constant temperature where the time taken is $\Delta t_B = 6.5 - 4 = 2.5 \, s$.Thus,the heat absorbed for fusion is $H_B = P 	imes \Delta t_B = 6 	imes 2.5 = 15 \, cal$.The ratio of heat absorbed is $\frac{H_A}{H_B} = \frac{24}{15} = \frac{8}{5}$.

Two substances $A$ and $B$ of equal mass $m$ are heated at a uniform rate of $6 \, cal \, s^{-1}$ under similar conditions. $A$ graph between temperature and time is shown in the figure. The ratio of heat absorbed $H_A/H_B$ by them for complete fusion is

Similar Questions

The same current is flowing in two alternating circuits. The first circuit contains only an inductor,and the second contains only a capacitor. If the frequency of the $e.m.f.$ of the $ac$ source is increased,what will be the effect on the value of the current in these circuits?

The reaction of $CH_3-CH=CH-C_6H_4-OH$ with $HBr$ gives:

$A$ plane passing through $(-1, 2, 3)$ and whose normal makes equal angles with the coordinate axes is

The total number of $\sigma$ and $\pi$-bonds in pyrophosphoric acid are respectively

The wavelengths of light used in an optical instrument are ${\lambda _1} = 4000\,\mathring{A}$ and ${\lambda _2} = 5000\,\mathring{A}$. The ratio of their respective resolving powers (corresponding to ${\lambda _1}$ and ${\lambda _2}$) is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module