SAU PAST PAPER 2011
SAU 5 years
Past Papers Click
here
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
- As
- Few
- No
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The noun rain is uncountable, so it should be “as little rain” instead of as few rain.
Corrected sentence: No other province receives as little rain as the province of Sindh.
برقی مقناطیسی لہروں کو ______ نے دریافت کیا تھا؟
- Heinrich Rudolf Hertz
- Henri Becquerel
- James Clerk Maxwell
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Heinrich Rudolf Hertz discovered electromagnetic waves in 1887, experimentally confirming James Clerk Maxwell's predictions.
Hertz demonstrated the existence of radio waves, a type of electromagnetic wave, using a simple apparatus.
ڈایوڈ _____ کے طور پر کام کرسکتا ہے؟
- Rectifier
- Oscillator
- Multi-vibrator
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A diode allows current in one direction only, blocking the reverse.
This property makes it useful as a rectifier, converting AC into DC.
جب ہم زمین کی سطح سے نیچے جاتے ہیں تو ، کشش ثقل (جی) کی وجہ سے ایکسلریشن کی قدر _____؟
- Reduces to zero
- Increases
- Decreases
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
As we go below Earth’s surface, the outer layers exert no gravitational force (by the shell theorem).
Only the mass beneath contributes, so g decreases gradually and becomes zero at the Earth’s center.
ایک گیس سے بھرے ہوئے غبارے کے پاس _____ ہے؟
- Potential energy
- Kinetic energy
- Pressure energy
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A gas-filled balloon stores potential energy due to the compressed gas inside creating pressure.
This stored energy can be released when the balloon bursts or expands.
ایک پرکشیپک کا راستہ _____ ہے؟
- Horizontal
- Parabolic
- Elliptical
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A projectile follows a parabolic path under the influence of gravity and initial velocity.
This happens because of the combination of uniform horizontal motion and accelerated vertical motion.
کسی مشین کے ذریعہ کئے گئے کام کو _____ کہا جاتا ہے؟
- Output
- Input
- Force
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
In mechanics, the work done by a machine is termed as its output.
The input is the work supplied to the machine, while output is the useful work delivered.
ایک آدمی دیوار کو دھکا دیتا ہے لیکن اسے بے گھر کرنے میں ناکام رہتا ہے۔ وہ _____ کرتا ہے؟
- No work
- Negative work
- Maximum positive work
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Work is done only when a force produces displacement.
Since the wall does not move, displacement = 0 → Work = 0.
- 48 km/h
- 50 km/h
- 60 km/h
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
For equal distances, average speed = harmonic mean = 2𝑎𝑏/𝑎+𝑏 = 2⋅40⋅60/40+60 = 48.
Not the arithmetic mean (which would be 50) because travel times differ.
طبیعیات کے علمبردار _____ ہیں؟
- Chinese
- Greeks
- Egyptians
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The Greeks are considered pioneers of physics due to early contributions by philosophers like Aristotle, Archimedes, and Democritus.
They laid the foundations of natural philosophy, which later evolved into modern physics.
