• Subject:

...

• Topic:

...

The temperature inside a refrigerator is and the room temperature is . The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be

(a)$\frac{{t}_{1}}{{t}_{1}-{t}_{2}}$      (b) $\frac{{t}_{1}+273}{{t}_{1}-{t}_{2}}$

(c) $\frac{{t}_{2}+273}{{t}_{1}-{t}_{2}}$    (d) $\frac{{t}_{1}+{t}_{2}}{{t}_{1}+273}$

NEET