Question

solve on a paper and then click the pic to send ans is 2​

Answer 1

$\huge\bold\red{Answer}$

Correct option (b) t1 +273/t1 - t2

$\bf \: Explanation$

Temperature inside refrigerator = $\bf \: t_2°C$ Room temperature = $\bf \: t_1°C$

For refrigerator,

$\bf \: = \frac{heat \: given \: \: to \: high \: termperature \: (Q_1)}{heat \: taken \: from \: lower \: temperature \: (Q_2)} = \frac{T_1}{ T_2 </p><p>}$

$\bf \: \frac{Q_1}{Q_2} = \frac{t_1 \: + 273}{t_2 \: + 273}$

$\bf \: \: = > \frac{Q_1}{Q_1 - w} = \frac{t_1 \: + 273}{t_2 \: + 273}$

$\bf \: \: or \: 1 - \frac{w}{Q_1} = \: \frac{t_2 \: + 273}{_1 \: + 273}$

$\bf \: \: or \: 1 - \frac{w}{Q_1} = \: \frac{t_1 \: - t_2}{t_1 \: + 273}$

The amount of heat delivered to the room for each joule of electrical energy (W= 1 J)

$\bf \: Q_1 \: = \frac{t_1 \: + 273}{t_1 \: - t_2}$