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Sticky Note
A Refracting telescope consists of ____?
ایک ریفریکٹنگ دوربین ____ پر مشتمل ہوتی ہے؟
  1. A primary mirror and A secondary mirror
  2. A primary lens and A secondary lens
  3. A primary lens and A secondary mirror
  4. A primary mirror and A secondary lens
Explanation

A refracting telescope has two lenses:

  1. A primary lens (objective) that collects and focuses light.
  2. A secondary lens (eyepiece) that magnifies the focused light to form an image.

Related MCQs

Which of the following physical characteristics is not classified as a colligative property?
درج ذیل میں سے کون سی طبعی خصوصیت کولیگیٹو خاصیت نہیں
  1. Relative lowering of vapour pressure
  2. Elevation of boiling point
  3. Viscosity
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Which device converts chemical energy into electrical energy?
کون سا آلہ کیمیائی توانائی کو برقی توانائی میں تبدیل کرتا ہے؟
  1. Generator
  2. Battery
  3. Modem
  4. Electric Motor
اس سوال کو وضاحت کے ساتھ پڑھیں
Evaporation can occur at ____?
تبخیر کس درجہ حرارت پر ہو سکتی ہے؟
  1. Freezing point
  2. Melting point
  3. Boiling point
  4. All temperatures
اس سوال کو وضاحت کے ساتھ پڑھیں
In the Contact process for manufacturing sulfuric acid, which catalyst is commonly used for the conversion of SO₂ to SO₃?
  1. Platinum oxide only
  2. Iron powder
  3. Vanadium pentoxide
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
What is the total quantity of electrical charge required to deposit exactly 1 mole of silver from a solution containing Ag⁺ ions?
  1. 96,485
  2. 48,250
  3. 1,000
  4. None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
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