The weight of sphere in air is 50g . Its weight 40g in a liquid, at temperature of 20Â°C When temperature increases to 70Â°C, it eight becomes 45g , then the ratio of densities of liquid at given two temperature (a/b). Fill the value of (a/b).

Question

The weight of sphere in air is 50g . Its weight 40g in a liquid, at temperature of 20Â°C When temperature increases to 70Â°C, it eight becomes 45g , then the ratio of densities of liquid at given two temperature (a/b). Fill the value of (a/b). (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Let density of liquid at 20Â°C be ρ 1 and at 70Â°C be ρ 2 &Wapparent=Wair-VÏg then at 20Â°C:40=50-VÏ1g⇒ VÏ1g=10 and at 70Â°C:45=50-VÏ2g⇒ VÏ2g=5 &rArr; So density ratio (ρ 1/ρ 2)=(2/1)

Q. The weight of sphere in air is 50g . Its weight 40g in a liquid, at temperature of 20°C When temperature increases to 70°C, it eight becomes 45g , then the ratio of densities of liquid at given two temperature ba​. Fill the value of ba​.

Let density of liquid at 20°C be ρ1​ and at 70°C be ρ2​&Wapparent​=Wair​−Vρg then at 20°C:40=50−Vρ1​g⇒Vρ1​g=10 and at 70°C:45=50−Vρ2​g⇒Vρ2​g=5 ⇒ So density ratio ρ2​ρ1​​=12​

Q. The weight of sphere in air is $50 g$ . Its weight $40 g$ in a liquid, at temperature of $2 0^{°} C$ When temperature increases to $7 0^{°} C,$ it eight becomes $45 g$ , then the ratio of densities of liquid at given two temperature $\frac{a}{b} .$ Fill the value of $\frac{a}{b} .$