Practise All MCQs in Lecturer Physics Past Papers and Syllabus. Attempt multiple-choice questions, check answers and revise related subtopics.
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.
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جولائی 2023 میں لانچ ہونے والی ایلون مسک کی مصنوعی انٹیلیجنس کمپنی کا کیا نام ہے؟
Answer: xAI
Explanation Founded by Elon Musk : xAI was launched in July 2023 to develop advanced AI models . AI Development : It introduced Grok , an AI chatbot integrated into X (formerly Twitter) .
Answer: Angel
Explanation Imp means چھوٹا شیطان Angel means فرشتہ
Answer: 16 F0
Explanation According to the law of universal gravitation: F ∝ (m1 × m2) / r^2 Initially, F0 ∝ (m × m) / r^2 After doubling the mass and halving the distance: F_new ∝ (2m × 2m) / (r/2)^2 = 16 × F0
Answer: 112 km/s
Explanation Escape velocity (vₑ) is given by: vₑ = √(2GM/r) where: G = gravitational constant M = mass of the planet r = radius of the planet Given: M₂ = 1000M₁ (mass of the new planet is 1000 times that of Earth) r₂ = 10r₁ (radius of the new planet is 10 times that of Earth) Escape velocity on the new planet (vₑ₂) is: vₑ₂ = √(2GM₂/r₂) = √(2G(1000M₁)/(10r₁)) = √(200G(M₁/r₁)) = √200 × √(2GM₁/r₁) = √200 × vₑ₁ Given vₑ₁ = 11.2 km/s: vₑ₂ ≈ √200 × 11.2 km/s ≈ 112 km/s
ایک دوہری کے دوران ، _____ کے ذریعہ دوئم کے مرحلے میں تبدیلی آتی ہے؟
Answer: 2π rad
Explanation In one complete oscillation (one full cycle), the phase of an oscillating system changes by 2 π 2pi radians . This corresponds to the system returning to its starting position in a periodic motion, such as simple harmonic motion.
صفحے کے ہوائی جہاز میں تار کا ایک مربع لوپ ہے۔ مقناطیسی فیلڈ میں کمی کا صفحہ میں ہدایت کی گئی ہے۔ لوپ میں حوصلہ افزائی موجودہ ____ ہے؟
Answer: Counterclockwise
Explanation Lenz's Law states that the induced current opposes the change in magnetic flux. Since the magnetic field is decreasing and directed into the page , the loop induces a current to oppose the decrease by creating a field into the page . To achieve this, the induced current must flow counterclockwise .
کیپلر کے قانون کی مدت کا کیا تعلق ہے؟
Answer: Time period and semi-major axis
Explanation Kepler's Third Law of Planetary Motion states : T² = (4π²/G * (M₁ + M₂)) * a³ Where: T = Orbital Period a = Semi-major Axis G = Gravitational Constant M₁ and M₂ = Masses of the two bodies (e.g., planet and star) This law shows that the square of the orbital period (T) is proportional to the cube of the semi-major axis (a).
رفتار کے وقت کے گراف کے تحت علاقہ ______ دیتا ہے؟
Answer: Displacement
Explanation The area under a velocity-time graph represents the total displacement of an object. It can be calculated by multiplying velocity by time or by finding the area of the geometrical shape formed under the graph.
صابن فلم کی وجہ سے سورج کی روشنی میں شاندار رنگوں کی نمائش؟
Answer: Interference of light
Explanation Soap film exhibits brilliant colors in sunlight due to " interference of light ."
کولمب کی طاقت کی حد _____ ہے؟
Answer: Infinite
Explanation Coulomb’s force follows the inverse square law , meaning it decreases with distance but never becomes exactly zero . Since there is no definite boundary where the force completely vanishes, its range is considered infinite .
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