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.
توانائی کی قیمت جس تک تمام توانائی کی حالتیں مطلق صفر پر بھری ہوئی ہیں اور جس سے اوپر تمام ریاستیں خالی ہیں اسے _____ کہا جاتا ہے؟
A. Maximum energy
B. Fermi energy
C. Ground state energy
D. None of these
Check answer and explanation
Answer: Fermi energy
Explanation The Fermi energy is the highest energy level that electrons occupy at absolute zero temperature. Above this energy, states are empty , and below it, they are filled .
A. Whose curl is equal to the electric field intensity
B. Whose divergence is equal to electric potential
C. Whose curl is equal to the magnetic flux density
D. None of these
Check answer and explanation
Answer: Whose curl is equal to the magnetic flux density
Explanation Magnetic Vector Potential ( A mathbf{A} ) is a vector field whose curl gives the magnetic flux density ( B mathbf{B} ), expressed as: B = ∇ × A This potential is useful in electromagnetism as it simplifies Maxwell’s equations. It is used in solving problems related to electromagnetic fields.
مندرجہ ذیل میں سے دنیا کا سب سے چھوٹا سمندر کون سا ہے؟
A. Atlantic
B. Arctic
C. Indian
D. Pacific
Check answer and explanation
Answer: Arctic
Explanation The Arctic is the shortest ocean in the world. Additional information: 71% of Earth's surface is covered by ocean The warmest Ocean in the world is the Indian Ocean. The hottest ocean area is the Persian Gulf . The Pacific is the largest ocean in the world. Diamantina Trench is the deepest place in the Indian Ocean Country Jordon has no Ocean The five major oceans listed by size from largest to smallest are the The Pacific Ocean , The Atlantic Ocean , The Indian Ocean , The Southern Ocean , The Arctic Ocean . ND11-2-2023 ********* VU FIA ASSISTANT PAST PAPER 02-01-2022
نینو ٹکنالوجی میں مندرجہ ذیل میں سے کون سا اطلاق نہیں کرتا ہے؟
A. It is general-purpose technology
B. None of these
C. It can be called green technology
D. Newtonian mechanics can describe it
Check answer and explanation
Answer: Newtonian mechanics can describe it
Explanation Nanotechnology deals with materials at the nanoscale (1-100 nm) , where quantum mechanics is required instead of Newtonian mechanics . Newtonian mechanics fails at this scale because quantum effects dominate, influencing electrical, optical, and mechanical properties .
ایک شے سمندر میں مستقل رفتار پر عمودی طور پر اترتی ہے۔ آبجیکٹ پر کام کرنے والی تین قوتیں چپچپا ڈریگ اپرسٹ اور وزن ہیں۔ ان کی وسعت کے مابین کون سا تعلق درست ہے؟
A. None of these
B. Weight < upthrust
C. Weight > upthrust
D. Weight < drag
Check answer and explanation
Answer: Weight > upthrust
Explanation The object moves vertically downward at constant velocity , meaning forces are balanced. Weight is greater than upthrust because an additional force (viscous drag) also acts upward to balance the system.
Explanation Energy of one photon (E) = hc / λ h = 6.626 × 10^-34 Js c = 3 × 10^8 m/s λ = 4961 Å = 4961 × 10^-10 m E = (6.626 × 10^-34 Js × 3 × 10^8 m/s) / (4961 × 10^-10 m) = 4.007 × 10^-19 J Number of photons required to do 1 J of work: n = 1 J / (4.007 × 10^-19 J) = 2.4961 × 10^18