All MCQs - Lecturer Physics Past Papers and Syllabus Practice | PakExamPoint
Practise All MCQs in Lecturer Physics Past Papers and Syllabus. Attempt multiple-choice questions, check answers and revise related subtopics.
All MCQs and revision practice
Study All through multiple-choice questions in Lecturer Physics Past Papers and Syllabus. This subtopic contains 342 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
Use these All MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.
Explanation When current flows through an inductance , it builds up gradually due to the back electromotive force (EMF) induced by the changing current. This results in an exponential growth of the current over time.
جن مادوں کو سختی سے مقناطیسی بنایا جاسکتا ہے اسے _______ کہا جاتا ہے؟
A. None of these
B. Ante-ferromagnetic
C. Paramagnetic
D. Ferromagnetic
Check answer and explanation
Answer: Ferromagnetic
Explanation Ferromagnetic substances can be strongly magnetized due to the alignment of their atomic dipoles in the same direction. Common examples include iron, cobalt, and nickel .
Explanation Radioactivity is the spontaneous decay of an unstable atomic nucleus . It emitting radiation such as alpha, beta, or gamma rays . This process occurs in radioactive elements like uranium and radium , leading to nuclear transformation over time.
اورکت خطے میں ہائیڈروجن کی مندرجہ ذیل سیریز میں سے کون سا سلسلہ آتا ہے؟
A. Lyman
B. Pfund
C. None of these
D. Balmer
Check answer and explanation
Answer: Pfund
Explanation The Pfund series consists of hydrogen spectral lines that fall in the infrared region , with electron transitions to the fifth energy level (n = 5) . Other series : Lyman (UV, n = 1) Balmer (Visible, n = 2) Brackett (Infrared, n = 4)
Explanation To find the moment of inertia (I) of the rotating body, we can use the formula: τ = I × α where τ is the torque, I is the moment of inertia, and α is the angular acceleration. Given: τ = 2 × 10^-4 Nm α = 4 rad/s^2 Rearranging the formula to solve for I: I = τ / α = (2 × 10^-4 Nm) / (4 rad/s^2) = 0.5 × 10^-4 kgm^2
Explanation " Badr " means " full moon " in Arabic. The Battle of Badr , also called Furqan . The Battle of Badr is also known as The Day of the Criterion. Day of the Criterion means کسوٹی کا دن It took place on Tuesday, 13 March 624 CE (17 Ramadan, 2 AH ) near the city of Badr . Prophet Muhammad SAW , commanding his Sahaba, defeated the Quraysh army led by Abu Jahl (Amr ibn Hishām). The Kufar forces numbered 1,000 . It was the first battle of Islam , with 313-317 Muslims. The Muslim forces included 82-85 Muhajirun and 231 Ansar ( 61 from Aws and 170 from Khazraj ). They had 2 horses and 70 camels. Fourteen Muslims were martyred , while 70 Kufar were killed and 70 captured. Surah Al-Anfal mentions that Allah promised to reinforce the Muslims with 1,000 angels. Last verified on 09-05-2026
Explanation The frequency of a stretched string is proportional to the square root of the tension. To produce an octave (double frequency) , the tension must increase fourfold. Since the original tension is from 4 kg , the required tension is 4 × 4 = 16 kg wt .