SST MATH PHYSICS PAST PAPER 04-08-2019
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
سن 1916 کا لکھنؤ معاہدہ کن کے درمیان کیا گیا تھا؟
The british and india
The Congress and the Muslim League
The Hindus and the Muslims
The moderates and extremists
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Explanation
Lucknow Pact (1916) was an agreement between: Indian National Congress – headed by Bal Gangadhar Tilak All-India Muslim League – led by Muhammad Ali Jinnah Additional information :
Congress adopted the pact at Lucknow session on 29 December 1916 . Muslim League approved it on 31 December 1916 . Last verified on 19-01-2026
Destroy
Harm
Damage
Endanger
All of these
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Explanation
PROTECT means بچانا ,حفاظت
Harm means نقصان
Damage means تباہ
Destroy means تباه کرنا
Endanger means خطرہ
کی پیمائش کے لئے اسپیکٹومیٹر استعمال کیا جاتا ہے؟ _____
Photons
Laser/Wavelength
Line spectra
None of these
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Explanation
A spectrometer is an instrument used to measure the properties of light over a specific portion of the electromagnetic spectrum , especially to analyze line spectra produced by atoms or molecules.
It helps identify elements or compounds by detecting their unique emission or absorption lines in the spectrum.
A spectrometer is an instrument used to measure the wavelength of light (or other electromagnetic radiation) by dispersing it into a spectrum.
It is commonly used to analyze the spectral lines of elements , which correspond to specific wavelengths.
مندرجہ ذیل میں سے کون ایکس رے کی پراپرٹی نہیں ہے؟
They are deflected by electric and magnetic fields
They are electromagnetic radiations
They travel is straight lines
They affect photographic plate
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Explanation
X-rays are electromagnetic waves and not charged particles , so they are not deflected by electric or magnetic fields.
They travel in straight lines , affect photographic plates, and have properties of electromagnetic radiation .
الیکٹرک جنریٹر کا اصول _____ پر مبنی ہے؟
Faraday's law
Boyle's law
Newton's law
None of these
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Explanation
An electric generator works on the principle of electromagnetic induction.
Faraday's law states that a changing magnetic flux induces an emf, which is the working principle of generators.
کسی ٹرانجسٹر میں ان پٹ وولٹیج کے آؤٹ پٹ وولٹیج کا تناسب _____ کہا جاتا ہے؟
Amplification ratio
Voltage gain of the amplifier
Voltage loss of the amplifier
None of these
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Explanation
The ratio of output voltage to input voltage in a transistor circuit is called the voltage gain .
It measures how much the amplifier increases the input signal voltage.
گاما کرنوں میں _____ پر مشتمل ہے؟
Helium nuclei
Neutrons
Radiations similar to x-rays
None of these
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Explanation
Gamma rays consist of radiations similar to x-rays.
They are high-energy electromagnetic waves with no mass or charge.
نویں مدار میں الیکٹران کی متحرک توانائی _____ ہے؟
1/2m Vn
1/2m Vn²
2m Vn²
None of these
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Explanation
The kinetic energy (KE) of an electron in the nth orbit is given by:
KE = 1/2mv²n
Where m is the mass of the electron and vn is its velocity in the nth orbit.
Had
Was
Were
None of these
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Explanation
" People " is plural, so the verb must be plural too.
" Were " is the past tense plural form of " to be ," matching the sentence context.
0 N
10 N
100 N
None of these
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Explanation
The force is acting along the y-axis only , so it has no component along the z-axis .
Answer: 0 N
