Question

Answer fast to receive 100 point and get brainliest tag bt answer should be correct​

Answer 1

In a potentiometer experiment, the emf of a cell can be measured if the potential drop along the potentiometer wire is more than the emf of the cell to be determined. As values of emfs of two cells are approximately 5V and 10V, therefore, the potential drop along the potentiometer wire must be more than 10V. Hence, option (b) is correct....

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Answer 2

Answer:

Sodium–potassium alloy, colloquially called NaK (commonly pronounced /næk/), is an alloy of the alkali metals sodium (Na, atomic number 11) and potassium (K, atomic number 19) that is normally liquid at room temperature.

Specific heat capacity (c): 982 J/kg⋅K

Density (ρ): 0.866 g/cm3,20°C; 0.855 g/cm3,100°C; 0.749 g/cm3,550°C