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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
مندرجہ ذیل میں سے کون سا بیان سرکٹ کے بارے میں درست ہے؟
- Parallel and the current flows clockwise
- Series and the current flows clockwise
- Series and the current flows counterclockwise
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- In a series circuit, components are connected one after another in a single path.
- The current is the same through all components.
- Conventional current flows from positive to negative, typically clockwise in diagrams.
- Parallel circuits have multiple paths, unlike series circuits.
Last verified on 17-03-2026
ایک مقناطیس جس کو مقناطیس کرنا مشکل ہے ______ کہلاتا ہے؟
- Permanent magnet
- Temporary Magnet
- Electromagnet
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- A permanent magnet retains its magnetism for a long time.
- It is hard to magnetize but difficult to demagnetize once magnetized.
- Made from hard magnetic materials like steel or alnico.
- Unlike temporary magnets, it does not lose its magnetism easily.
Last verified on 17-03-2026
لہر کی رفتار ______ کے برابر ہے؟
- Wavelength x Frequency
- Wavelength / Frequency
- Frequency / Wavelength
- Wavelength + Frequency
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- The velocity of a wave depends on its wavelength and frequency.
- Formula: v = λ × f, where λ is wavelength and f is frequency.
- This applies to sound waves, light waves, and water waves.
- Higher frequency or longer wavelength increases the wave’s velocity if the medium is constant.
Last verified on 17-03-2026
- Repeating sounds
- Refracted sounds
- Absorbed sounds
- Amplified sounds
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- An echo is a sound that reflects off a surface and is heard again.
- It occurs when sound waves bounce back from a distant surface like a wall or mountain.
- Echoes are common in caves, valleys, and empty halls.
- The reflected sound is perceived after a short delay.
Last verified on 17-03-2026
کشش ثقل پر قابو پانے کے لیے کس چیز کی ضرورت ہوتی ہے؟
- Gravitational force
- Friction
- Mass
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Gravity pulls objects toward the center of the Earth.
- To lift or move an object against gravity, a force equal to or greater than gravitational force is needed.
- This force allows objects to rise or stay in motion vertically.
Last verified on 17-03-2026
اگر ہم مارکر کو ہاتھ میں پکڑ کر چھوڑ دیں تو کیا ہوگا؟
- The force upward is shorter than the force downward
- The force upward is greater than the force downward
- Resultant force is maximum
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- When a marker is held and released, gravity pulls it downward.
- If there was an initial upward push, the upward force can be greater than the downward force momentarily.
- The marker accelerates until gravity slows it and pulls it back down.
- This explains the initial upward motion before falling.
Last verified on 17-03-2026
جب روشنی ____ سے داخل ہوتی ہے تو روشنی کا مکمل اندرونی انعکاس ممکن ہے؟
- Air to water
- Glass to glass
- Water to air
- Air to glass
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Total internal reflection occurs when light travels from a denser medium to a rarer medium.
- The angle of incidence must be greater than the critical angle for the two media.
- Light is completely reflected back into the denser medium instead of refracting.
- Common examples: optical fibers, diamonds, and mirages.
Last verified on 17-03-2026
آسمان نیلا کیوں دکھائی دیتا ہے کیونکہ یہ کون سا رنگ جذب کرتا ہے؟
- Red and reflects Blue
- Green and reflects blue
- Blue and reflects others
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- The sky appears blue due to Rayleigh scattering of sunlight by the atmosphere.
- Shorter wavelengths like blue light scatter more than longer wavelengths (red, yellow).
- The scattered blue light reaches our eyes, making the sky appear blue.
- Red light is less scattered and passes through the atmosphere.
Last verified on 17-03-2026
آئنز ایٹموں کے چارج شدہ ذرات ہیں اور ____ کی وجہ سے منفی اور مثبت چارجز بناتے ہیں؟
- Proton
- Electron
- Neutron
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Ions are charged particles formed when an atom gains or loses electrons.
- Loss of electrons creates a positively charged ion (cation).
- Gain of electrons creates a negatively charged ion (anion).
Last verified on 17-03-2026
پولی وینائل کلورائیڈ ایک ٹھوس ______ مادہ ہے؟
- Glass
- Plastic
- Paper
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Polyvinyl chloride (PVC) is a widely used synthetic polymer.
- It is a solid plastic material at room temperature.
- PVC is used in pipes, bottles, cables, and packaging.
- It is durable, lightweight, and resistant to corrosion.
Last verified on 17-03-2026
