Mass is constant; weight scales with gravity

Steps:

• Mass of an object is invariant and does not depend on location, so the object's mass on Q is 1 kg.
• On P, weight W_P = m * g_P, so 1 N = 1 kg * g_P, giving g_P = 1 m/s².
• g_P is one-tenth of g_Q, so g_Q = 10 * g_P = 10 m/s².
• On Q, W_Q = m * g_Q = 1 kg * 10 m/s² = 10 N.

Why B is correct:

• Matches W = mg formula, where mass stays 1 kg and weight increases 10-fold due to stronger g_Q.

Why the others are wrong:

• A: Weight too low; g_Q is 10 times g_P, so weight increases to 10 N.
• C: Mass cannot change for the same object; it remains 1 kg.
• D: Mass and weight both incorrect; mass is invariant, weight is 10 N not 100 N.

Final answer: B