25 verified questions · ~28 minutes · answer key checked against the official NTA final key across multiple sources. Text-only questions (diagram-based excluded until they can be shown properly).
The equation of state of a real gas is given by (P + a/V²)(V − b) = RT, where P, V and T are pressure, volume and temperature respectively and R is the universal gas constant. The dimensions of a/b² is similar to that of :
Wheatstone bridge principle is used to measure the specific resistance (S₁) of given wire, having length L, radius r. If X is the resistance of wire, then specific resistance is S₁ = X(πr²/L). If the length of the wire gets doubled then the value of specific resistance will be :
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