551. Here users will find all the physics Mcqs. Mechanics, Thermodynamics, Photonics, study of heat, Distance, work, force, time, machines, study of electricity, magnetism, law of motion, nuclear physics, Quantum, relativity, solar system, and all the topics will be covered in the physics mcqs section.
A) A
B) A/2
C) 2A
D) 4A
552. At what temperature will the resistance of a copper wire become three times its value at 0 degrees centigrade? Temperature coefficient of resistance of copper=4×10⁻³ per C⁰?
A) 500 C⁰
B) 450 C⁰
C) 400 C⁰
D) 550 C⁰
553. When 9×10¹³ electrons are removed from a body which has a charge of 2.50 µC. What is its charge now?
A) -14.4µC
B) -2.5µC
C) +14.4µC
D) +16.9µC
554. Rest mass energy of an electron is?
A) 0.511×10⁶ eV
B) 0.511×10⁹ eV
C) 0.511KeV×10³ eV
D) 0.511eV×10³ eV
555. A boy walks 6 kilometers to his school at a constant speed of 2.5 kilometers per hour and walks back the same speed of 5 kilometers per hour. His average speed for the round trip, expressed in kilometers per hour, is:
A. 24/13
B. 10/3
C. 3
D. 4.8
556. When an airplane is flying horizontally at 600 km/h at a height of 1960 meters, it can drop a bomb when it is vertically above point A on the ground. Point B is where the bomb lands on the ground. The stomach muscle’s distance:
A. 1200 M
B. 0.33 KM
C. 3.33 KM
D. 33 KM
557. A car travels 60 kilometers in total, half of the time at 80 kilometers per hour and the other half at 40 kilometers per hour. What is the typical speed of the vehicle?
A. 60 Km/hr
B. 80 Km/hr
C. 120 Km/hr
D. 180 Km/hr
558. Elastically, a ball of mass m traveling at the same speed collides with another ball that is stationary. The occurrence ball will lose maximum motor energy when the mass of the fixed ball is:
A. m
B. 2 m
C. 4 m
D. Infinity
559. A 120-meter-long train travels at a speed of 20 m/s in the direction of a path. A 130-meter-long train B traveling in the opposite direction at 30 M/s crosses the primary train within the following time frame:
A. 6 s
B. 36 s
C. 38 s
D. None of these
560. Which velocity can a ball be projected vertically at such that its fifth-second distance is twice that of its sixth-second distance (g=10m/s²)?
A. 58.8 m/s
B. 49m/ s
C. 65 m/s
D. 19.6 m/s
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