• Call Us : 03082533000 (WhatsApp)
  • Email Us : TestPointpk.com@gmail.com
Testpoint Whatsapp group Testpoint Whatsapp group
Sticky Note
If we double the magnitude of charges and double the distance between charges then the magnitude of force will become?
اگر دونوں چارجز کی مقدار دوگنی اور ان کے درمیان فاصلہ بھی دوگنا کر دیا جائے، تو قوت کی مقدار کیا ہوگی؟
  1. Eight times
  2. Sixteen times
  3. Remains same
  4. None of these
Explanation
  • According to Coulomb's law, the electrostatic force is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them.
  • Doubling both charges makes the force 4 times greater, while doubling the distance makes the force 1/4 as large.
  • The combined effect is 4 x 1/4 = 1. Therefore, the force remains the same.
  • Coulomb's law applies to stationary point charges in a vacuum or approximately in air.

Last verified on 28-10-2026

Related MCQs

Which of the following statements about 14 g of CO and 14 g of N₂ is incorrect? 11.2 dm³, 0.5 moles of CO, Same moles of CO and N₂, 1.5 × 10²³ molecules
  1. 11.2 dm³
  2. 0.5 moles of CO
  3. Same moles of CO and N₂
  4. 1.5 × 10²³ molecules
اس سوال کو وضاحت کے ساتھ پڑھیں
In the absence of air resistance, a stone is thrown from point 'P' and follows a parabolic (projectile) path in which the highest point reached is 'T'. The stone reaches point 'Q' just before landing. The vertical component of acceleration of the stone is?
  1. Greatest at T
  2. Greatest at Q
  3. The same at Q as at T
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Angular velocity has same dimensions as that of?
زاویائی رفتار کی بُعدیاتی فارمولا کس مقدار کے بُعدیاتی فارمولے کے برابر ہے؟
  1. Linear velocity
  2. Angular displacement
  3. Frequency
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
When we measure the nuclear masses and compare them with the masses of the constituent nucleus in free states. The mass of the nucleus is always less than the mass of the constituent nucleons. This difference in mass is known as?
جب ہم کسی جوہری مرکزے کی کمیت کا موازنہ آزاد نیوکلیونز کی مجموعی کمیت سے کرتے ہیں تو مرکزے کی کمیت ہمیشہ کم ہوتی ہے۔ کمیت کے اس فرق کو کیا کہتے ہیں؟
  1. Mass Value
  2. Mass Defect
  3. Mass Energy
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
A fixed mass of an ideal gas absorbs 1200 J of heat and expands under a constant pressure of 25 kPa from a volume of 20 × 10⁻³ m³ to 48 × 10⁻³ m³. What is the change in internal energy of the gas?
  1. +700 J
  2. +500 J
  3. +1900 J
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Test Point Whatsapp Channel

All Rights Reserved © TestPointpk.com