INTERNATIONAL SYSTEM OF UNITS (SI)
International System of Units (SI)
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
بجلی کے اہم سپلائی میٹر ‘کلو واٹ گھنٹے’ کے اکائیوں میں پیمائش کرتے ہیں ، یہ _____ کی اکائی ہے؟
- Current
- Power
- Energy
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Kilowatt-hour (kWh) is a unit of electrical energy.
It represents the energy consumed when 1 kilowatt of power is used for 1 hour.
نوجوان ماڈیولس ______ کی اکائیوں میں ماپا جاتا ہے؟
- Nm⁻²
- Pa
- kgm⁻³
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Young's Modulus is the ratio of stress to strain and measures stiffness of a material.
Since stress is measured in N/m² (or Nm⁻²) and strain is dimensionless, the unit remains Nm⁻².
- Joule
- Energy/Heat
- Work
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Joule is a unit of work or energy or heat.
Joule is a scalar quantity.
SI base units: kg⋅m2⋅s−2
Symbol: J
Additional Information:
It is equal to the work done by the force of one newton acting through one meter.
Named in honor of the English physicist James Prescott Joule.
Joule equals 107 ergs or approximately 0.7377 foot-pounds.
- Diet
- Food intake
- Quality of heat
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A calorie is a unit of energy, specifically used to measure heat energy.
1 calorie is the amount of heat required to raise the temperature of 1 gram of water by 1°C.
In dietary terms, we use kilocalories (kcal) — where 1 kcal = 1000 calories — but it still measures energy, not diet or food itself
جسمانی مقدار "تسلسل" میں وہی جہت ہے جو ______ کی طرح ہے؟
- Momentum
- Force
- Power
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Impulse is defined as Force × Time (F × t), and its unit is Ns (Newton-second).Momentum is Mass × Velocity (m × v), which also has the unit Ns, meaning both have the same dimensions.
فیتھم ______ کی پیمائش کی اکائی ہے؟
- Sound
- Depth
- Distance
- Frequency
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Fathom is used to measure the depth of water or the length of a nautical rope or cable.
A fathom is six feet, or 1.8288 meters.
پتھر کس پیمائش کی اکائی ہے؟
- Length
- Weight
- Area
- Volum
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The use of "stone" as a weight unit is less common today but still used in certain contexts.
A stone is a unit of mass measurement in the British and English imperial systems.
It is equal to 14 avoirdupois pounds, or about 6.35 kilograms.
The symbol for stone is st.
ایس آئی کتنی بنیادی اکائیوں سے بنا ہے؟
- 7
- 6
- 19
- 20
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The SI is made up of 7 base units
that define the 22 derived units with special names and symbols, which are illustrated in NIST SP 1247, SI Base Units Relationship Poster.
- 6
- 7
- 6.7
- 7.5
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Fresh milk has a pH value of 6.7.
Bacteria from the family of Lactobacillaceae are lactic acid bacteria (LAB) responsible for the breakdown of the lactose in milk to form lactic acid.
ٹیپ کی رفتار _____ میں ماپا جاتا ہے؟
- Feet per second
- Meter per second
- Inch per second
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Tape speed is measured in inch per second.
