PAF CIVILIAN PAST PAPER 2021 TO DATE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
- persistence
- game played on grass
- large town
- indifference
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
TENACITY استقامت , ثابت قدمی Persistence, استقامت
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فوٹو الیکٹرک ایفیکٹ کی وضاحت کس نے کی؟
- Isaac Newton
- James Clerk Maxwell
- Albert Einstein
- Niels Bohr
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Albert Einstein explained the Photoelectric Effect in 1905 by proposing that light consists of tiny particles called photons.
- He showed that electrons are emitted from a metal surface when light of sufficient frequency falls on it.
- His explanation supported Quantum Theory.
- Einstein received the Nobel Prize in Physics in 1921 for this discovery.
Last verified on 06-07-2026
- Remunerate
- Clear
- Balance
- Misappropriate
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Embezzle means غبن
- Misappropriate means غلط
Last verified on 05-06-2026
ویلوسٹی کی ڈائمنشن کیا ہے؟
- [L T⁻¹]
- [M L T⁻²]
- [L T²]
- [L² T⁻¹]
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- The dimension of velocity is [L T⁻¹].
- Velocity is defined as displacement per unit time.
- It shows how fast and in which direction an object moves.
- It is a vector quantity.
- SI unit of velocity is m/s.
Last verified on 17-06-2026
- Chair
- Bird
- Man
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Swim is an action naturally associated with a fish.Just as walk is a natural action associated with a man.Both represent characteristic movements of the respective entities.Last verified on 31-03-2026
- Capacitor
- Inductor
- Diode
- Resistor
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- For rectification, we use a diode (or p-n junction diode) as a rectifier.
- Process: Converts AC to DC
- Types: Half-wave, Full-wave, Bridge
- 85185
- 7898
- 8518
- 431789
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
From FATHER → 431789, we map each letter:
-
F = 4
-
A = 3
-
T = 1
-
H = 7
-
E = 8
-
R = 9
Now apply to HERE:
So, HERE → 7898
Last updated by NS on 27-05-2026
آئن سٹائن کو ان کے کونسے کام پر نوبل انعام سے نوازا گیا
- Theory of the photoelectric effect
- General theory of relativity
- Special theory of relativity
- Invention of Electric Motor
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Albert Einstein received the Nobel Prize for his discovery of the Law of the photoelectric effect
- The 1921 prize was actually awarded in 1922.
- P=W×t
- P=W/t
- P=W+t
- P= t/W
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Power is the amount of energy transferred or converted per unit time
- Mathematical formula: P = Work ÷ Time.
- Power is a scalar quantity.
- Common symbols: P
- SI unit: watt (W)
- In SI base units: kg⋅m2⋅s−3
- Dimension unit: M L^2 T^− 3
Last updated 13-March-2026
لینز کا قانون _____ کی وضاحت کرسکتا ہے؟
- Only two of the three types of magnetism
- Ferromagnetism only
- Diamagnetism only
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Lenz’s Law states that the induced current opposes the change that produces it.
When a magnetic field is applied, induced currents in atoms oppose the applied field.
This opposing effect explains the behavior of diamagnetic materials.
Paramagnetism and ferromagnetism are explained mainly by electron spin and magnetic domains, not Lenz’s law.
Therefore, Lenz’s Law helps explain diamagnetism only.
Last updated 13-March-2026