Physics MCQs

Physics Objective (Multiple Choice) General Knowledge & General Science Questions & Answers for SSC-CGL, UPPSC, NDA, CDS and all one day examinations of India.

1. In recent times, the “dynamic brake system” is becoming popular in modern railways. The dynamic brake system coverts Kinetic energy to__:
[A] Potential energy
[B] Electricity
[C] Sound energy
[D] Magnetic energy

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2. When equal force acts for equal time on two masses, both gain:
[A] Same velocity
[B] Same acceleration
[C] Same kinetic energy
[D] Same momentum

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3. Which of the following statements regarding vectors is NOT correct?
[A] A unit vector is dimensionless
[B] A vector cannot be divided by a vector
[C] A vector changes, when it is displaced to itself
[D] Current is not a vector quantity

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4. What is the product of the mass of the body and its velocity called as?
[A] Force
[B] Linear Momentum
[C] Energy
[D] Power

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5. What is the gravitational potential energy for infinite distance?
[A] 0
[B] infinity
[C] 9.8 J
[D] None of the above

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6. In comparison to the gravitational force the earth exerts on the moon, the gravitational force the moon exerts on earth ________?
[A] will be greater
[B] will be lesser
[C] will be same
[D] None of the above

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7. What is the effect of increase in radius of orbit on the binding energy of a satellite?
[A] it increases
[B] it decreases
[C] It remains the same
[D] None of the above

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8. What is the ratio of normal stress to the volumetric strain within the elastic limits is called as?
[A] Bulk Modulus
[B] Young Modulus
[C] Modulus of Rigidity
[D] None of the above

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9. Who invented mercury barometer?
[A] Blaise Pascal
[B] Daniel Bernoulli
[C] Albert Einstein
[D] Evangelista Torricelli

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10. Which of the following has no effect on the pressure beneath the surface of a liquid?
[A] Area of the liquid surface
[B] Density of the liquid
[C] Strength of the gravitational field
[D] Depth of the liquid

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