The human eye forms image on MCQ with Answer and Explanation

Explanation:
Michael Faraday discovered electromagnetic induction (1831): changing magnetic flux induces EMF. Oersted found current-magnetism link; Ampere studied forces; Volta invented battery. Memory aid: 'Faraday = induction; Lenz = induced current direction'. History-based question testing key discoveries, frequently appearing in competitive exams.

Explanation:
Higher Q means sharper resonance, better selectivity.

Explanation:
Newton's first law (law of inertia) states bodies remain at rest or uniform motion unless acted upon by external force. This defines inertia - resistance to change in motion state. Force is defined in second law; momentum conservation in third. Memory aid: 'First law = inertia; second = F=ma; third = action-reaction'. Fundamental concept frequently tested to assess basic mechanics understanding.