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PHYSICS

Top Physics MCQs

چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
In displacement-time graphs for two particles executing SHM, it is observed that in the same time interval particle 1 completes two oscillations while particle 2 completes one oscillation. What is the relation between time periods of the two SHMs?
  1. 2T1 = T2
  2. 4T1 = T2
  3. T1 = 2T2
  4. None of these
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If 900 cm³ of gas, having a pressure of 800 millimeters of mercury, is compressed into a volume of 480 cm³, the temperature remaining constant, the pressure of the gas will be, in millimeters of mercury, approximately?
  1. 1700
  2. 1600
  3. 1500
  4. None of these
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A rectangular loop of wire is placed perpendicular uniform magnetic field and then spin around one of its sides at frequency "f" The induced emf is maximum when?
ایک مستطیل تار کے حلقے کو یکساں مقناطیسی میدان میں عموداً رکھا جاتا ہے اور پھر اس کے ایک کنارے کے گرد گھمایا جاتا ہے۔ پیدا ہونے والی برقی محرک قوت کب زیادہ سے زیادہ ہوتی ہے؟
  1. The derivative of the flux with respect to time is zero
  2. The flux is a maximum
  3. The flux is zero
  4. None of these
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What is the difference between transverse and longitudinal waves?
عرضی اور طولی لہروں کے درمیان کیا فرق ہے؟
  1. Transverse waves can travel through liquids and solids, while longitudinal waves can only travel through solids
  2. Transverse waves vibrate perpendicular to the direction of travel, while longitudinal waves vibrate parallel to the direction of travel
  3. Transverse waves are slower than longitudinal waves can travel through liquids and solids, while longitudinal waves can only travel through solids
  4. None of these
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A particle carrying a charge of 4e falls through a potential difference of 50 V. What is the energy gained by the particle in joules?
  1. 160 × 10⁻¹⁹ J
  2. 320 × 10⁻¹⁹ J
  3. 50 × 10⁻¹⁹ J
  4. None of these
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Maximum number of beats heard by human ear is?
انسانی کان زیادہ سے زیادہ کتنی بیٹس فی سیکنڈ سن سکتا ہے؟
  1. 10 beats/sec
  2. 7 beats/sec
  3. 8 beats/sec
  4. None of these
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There is no work done in?
کس عمل میں کوئی کام انجام نہیں دیا جاتا؟
  1. Isochoric
  2. Isothermal
  3. Isobaric
  4. None of these
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Three resistors with resistances R, 2R and 3R are connected in series with a 24V battery. The potential drop across each resistor is V1 across R, V2 across 2R, V3 across 3R. Calculate V1, V2, V3?
  1. V1=8V, V2=8V and V3=8V
  2. V1=4V, V2=8V and V3=12V
  3. V1=12V, V2=8V and V3=4V
  4. None of these
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Two spherical balls of 2.0 kg and 4.0 kg masses are moving towards each other with velocities of 10 m/s and 4 m/s respectively. What must be the velocity of the smaller ball after collision, if the velocity of the bigger ball is 3 m/s?
  1. 4.0 m/s
  2. 3.0 m/s
  3. 2.0 m/s
  4. None of these
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When a p-type material is put adjacent to n-type material then the device formed is called?
  1. Transistor
  2. Diode
  3. Rectifier
  4. None of these
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