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 Surah An-Naml is the 27th chapter of the Quran. The surah titled in English means “The Ants”. The bird Hudhud (hoopoe) appears twice in Surah An-Naml. Surah Al Naml of the holy Quran Bismillah is added to t he entire Bismillahir Rahmani Raheem in the 30th verse . This is why Surah Naml is known as the Surah with two bismillahs. Surah Naml is an earlier "Meccan surah".
Explanation According to Gauss's Law , the electric field inside a hollow spherical conductor is zero because any excess charge resides on the outer surface . This happens because the conducting material redistributes charge to cancel out internal electric fields.
یہ دو لاشیں غیر صفر کی رفتار کے ساتھ مخالف سمتوں میں آگے بڑھ رہی ہیں ، مندرجہ ذیل میں سے کون سا بیان صحیح ہے؟
A. Relative velocity < Absolute velocity
B. Relative velocity <= Absolute velocity
C. Relative velocity = Absolute velocity
D. None of these
Check answer and explanation
Answer: Relative velocity < Absolute velocity
Explanation When two bodies are moving in opposite directions , their velocities are added to find the relative velocity. Let's say the velocities of the two bodies are v1 and v2. Relative velocity = v1 + v2 Since both velocities are non-zero and in opposite directions, the relative velocity will be greater than the absolute velocity of either body. So, the statement " Relative velocity > Absolute velocity " is true.
پیرس آب و ہوا کے معاہدے سے مندرجہ ذیل میں سے کون سا پہلا ملک واپس لے گیا ہے؟
A. Russia
B. USA
C. Australia
D. India
Check answer and explanation
Answer: USA
Explanation The United States officially withdrew from the Paris Climate Accord On November 4, 2020 , under President Donald Trump. The U.S. rejoined the agreement on February 19, 2021 , under President Joe Biden .
فیوژن ری ایکٹر میں نیوکلائڈز کے درمیان الیکٹرو اسٹاٹک ریپلسیو فورس کو ختم کرنے کے لیے کیا ضروری ہے؟
A. Very high pressure
B. All of these
C. Very small volume
D. Very high temperature
Check answer and explanation
Answer: All of these
Explanation In a fusion reactor, it is necessary to overcome the electrostatic repulsive force between nuclides (nuclei) in order to achieve fusion. This requires: Very high temperature : Fusion reactions occur at extremely high temperatures, typically around 150 million degrees Celsius (270 million degrees Fahrenheit) . This energy is needed to overcome the electrostatic repulsive force and bring the nuclei close enough together to fuse. Very high pressure : Fusion reactions also require incredibly high pressure, similar to those found at the core of the sun . This pressure helps to overcome the repulsive force and increase the likelihood of fusion. Very small volume : The reaction chamber in a fusion reactor is designed to be extremely small, which helps to increase the density of the plasma (ionized gas) and reduce the distance between the nuclei. This makes it easier to overcome the electrostatic repulsive force and achieve fusion.
سب سے زیادہ توانائی کے الیکٹران _____ کے ذریعہ تیار کیے جائیں گے؟
A. Gamma rays
B. Visible light
C. None of these
D. X-rays
Check answer and explanation
Answer: Gamma rays
Explanation Gamma rays have the highest energy and shortest wavelength in the electromagnetic spectrum. They are produced in nuclear reactions and radioactive decay . This carrying extremely high energy capable of ionization and deep penetration .