MCQOPTIONS
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MCQOPTIONS
This section includes 778 Mcqs, each offering curated multiple-choice questions to sharpen your Physics Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 551. |
A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________? |
| A. | πR |
| B. | 2π R |
| C. | 0 |
| D. | 4πR |
| Answer» D. 4πR | |
| 552. |
Who discovered the inverse square law for gravity ? |
| A. | Einstein |
| B. | Galileo |
| C. | Newtons |
| D. | Plank |
| Answer» D. Plank | |
| 553. |
If a body of mass 10 kg is allowed to fall freely, its weight becomes______________? |
| A. | 0 |
| B. | 89N |
| C. | 9.8 N |
| D. | 10N |
| Answer» B. 89N | |
| 554. |
The planet nearest to the earth is______________? |
| A. | Venus |
| B. | Mercury |
| C. | Uranus |
| D. | Sun |
| Answer» B. Mercury | |
| 555. |
A satellite moving around the earth constitutes______________? |
| A. | An inertial frame of reference |
| B. | Non-inertial frame |
| C. | Neither inertial nor non-inertial |
| D. | Both inertial and non-inertial |
| Answer» C. Neither inertial nor non-inertial | |
| 556. |
A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________? |
| A. | 9.8 N |
| B. | 19.6 N |
| C. | 129.4 N |
| D. | 39.2 N |
| Answer» E. | |
| 557. |
Irregular flow of fluid is called_______________? |
| A. | Streamline |
| B. | Turbulent |
| C. | Uniform |
| D. | Laminar |
| Answer» C. Uniform | |
| 558. |
How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit) ? |
| A. | 365 days |
| B. | 730 days |
| C. | 329 days |
| D. | 129 days |
| Answer» E. | |
| 559. |
Coefficient of viscosity of honey is greater than______________? |
| A. | Milk |
| B. | Water |
| C. | Charcoal |
| D. | Water |
| Answer» E. | |
| 560. |
When fluid is incompressible then________________? |
| A. | The velocity of the fluid is constant |
| B. | The flow of the fluid is the straight line |
| C. | The density of the fluid is constant |
| D. | The volume of the fluid is constant |
| Answer» D. The volume of the fluid is constant | |
| 561. |
The dimensions of the coefficient of viscosity are_____________? |
| A. | ML-1T-1 |
| B. | M2L1T1 |
| C. | ML1T-1 |
| D. | M2L-1T-1 |
| Answer» B. M2L1T1 | |
| 562. |
The equation of continuity is obtained by applying in the law of conservation of_____________? |
| A. | Mass |
| B. | Energy |
| C. | Momentum |
| D. | All |
| Answer» B. Energy | |
| 563. |
According to equation of continuity A1V1 = A2V2 = constant. The constant is equal to_______________? |
| A. | Flow rate |
| B. | Volume of fluid |
| C. | Mass of fluid |
| D. | The density of the fluid |
| Answer» B. Volume of fluid | |
| 564. |
If we whirl a stone at the end of a string in the vertical circle, it is likely to break when the stone is________________? |
| A. | At the highest point |
| B. | At the lowest point |
| C. | At any point during motion |
| D. | At the point where gravity is not acting |
| Answer» C. At any point during motion | |
| 565. |
What is the outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s ? |
| A. | 1N |
| B. | 10N |
| C. | 2N |
| D. | 100N |
| Answer» B. 10N | |
| 566. |
In cricket when a bowler produce reverse swing the ball will move towards______________? |
| A. | The shinning side of the ball |
| B. | Rough side |
| C. | The seam of the ball |
| D. | Goes straight |
| Answer» B. Rough side | |
| 567. |
Venturi meter is used to measure_________________? |
| A. | Fluid pressure |
| B. | Fluid density |
| C. | Fluid speed |
| D. | None |
| Answer» B. Fluid density | |
| 568. |
Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be_______________? |
| A. | πR |
| B. | 2πR |
| C. | 0 |
| D. | 4πR |
| Answer» D. 4πR | |
| 569. |
A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________? |
| A. | mg |
| B. | mg – ma |
| C. | mg + ma |
| D. | mg – ma |
| Answer» D. mg – ma | |
| 570. |
Laminar flow usually occurs at speeds_____________? |
| A. | Low |
| B. | High |
| C. | Very high |
| D. | Some time high and some time low |
| Answer» B. High | |
| 571. |
The waveform of S.H.M. is________________? |
| A. | Standing wave |
| B. | Sine wave |
| C. | Square wave |
| D. | None |
| Answer» C. Square wave | |
| 572. |
In vibratory motion_________________? |
| A. | P.E. remains constant |
| B. | K.E. remain constant |
| C. | total energy remains constant |
| D. | total momentum remains constant |
| Answer» D. total momentum remains constant | |
| 573. |
The force responsible for the vibratory motion of the simple pendulum is_________________? |
| A. | mg cosθ |
| B. | mg sinθ |
| C. | mg tonθ |
| D. | mg |
| Answer» C. mg tonθ | |
| 574. |
The relation between linear and angular acceleration is______________? |
| A. | a = a x r |
| B. | a = r x a |
| C. | a = a x r |
| D. | r = a x a |
| Answer» D. r = a x a | |
| 575. |
The frequency of the second pendulum is________________? |
| A. | 1 hertz |
| B. | 0.5 hertz |
| C. | 1.5 hertz |
| D. | 2.5 hertz |
| Answer» C. 1.5 hertz | |
| 576. |
For ___________ flow the path of the fluid particles cannot be tracked? |
| A. | Laminar |
| B. | Streamline |
| C. | Turbulent |
| D. | Both A and B |
| Answer» D. Both A and B | |
| 577. |
A hoop and disc have same mass and radius. Their rotational K.E are related by an equation______________? |
| A. | K.E hoop = K.E disc |
| B. | K.E hoop = 2K.E disc |
| C. | K.E hoop = 1/2K.E disc |
| D. | K.E hoop = 4K.E disc |
| Answer» C. K.E hoop = 1/2K.E disc | |
| 578. |
If the length of the second pendulum becomes four times, then its time period will become________________? |
| A. | 4 times |
| B. | 6 times |
| C. | 8 times |
| D. | 2 times |
| Answer» E. | |
| 579. |
The restoring force acting on the simple pendulum is given by_______________? |
| A. | mg sin θ |
| B. | mg sin θ |
| C. | mg cos θ |
| D. | mg cos θ |
| Answer» C. mg cos θ | |
| 580. |
Simple harmonic motion is a type of________________? |
| A. | Rotational motion |
| B. | Circular motion |
| C. | Musical arrangement |
| D. | Vibratory motion |
| Answer» E. | |
| 581. |
Steradian is the SI unit of________________? |
| A. | Plane angle |
| B. | Solid angle |
| C. | Both plane angle and solid angle |
| D. | Neither plane angle nor solid angle |
| Answer» C. Both plane angle and solid angle | |
| 582. |
Which one is the correct representation of the unit of pressure ? |
| A. | Newton/Meter2 |
| B. | newton/meter2 |
| C. | Newton/meter2 |
| D. | newton/Meter2 |
| Answer» C. Newton/meter2 | |
| 583. |
Total distance travelled by a bob of the simple pendulum in one vibration is equal to________________? |
| A. | Amplitude |
| B. | Square of the amplitude |
| C. | 2 x amplitude |
| D. | 4 x amplitude |
| Answer» E. | |
| 584. |
Electrical resonance is observed in_______________? |
| A. | Radio |
| B. | Microwave oven |
| C. | Both in radio and microwave oven |
| D. | Neither in radio nor in a microwave oven |
| Answer» B. Microwave oven | |
| 585. |
Which one of the following radiations has the strongest photon? |
| A. | T.V waves |
| B. | Microwaves |
| C. | X-rays |
| D. | γ-rays |
| Answer» E. | |
| 586. |
In damped harmonic oscillation which one decreases ? |
| A. | Amplitude of vibration |
| B. | Energy of vibration |
| C. | Both amplitude and energy |
| D. | Neither amplitude nor energy |
| Answer» D. Neither amplitude nor energy | |
| 587. |
The relativistic energy E is equivalent to relativistic mass given by_______________? |
| A. | Ec2 |
| B. | E/c2 |
| C. | E/c |
| D. | c2/E |
| Answer» C. E/c | |
| 588. |
The mass attached to a spring executes ? |
| A. | Vibratory motion |
| B. | Rotatory motion |
| C. | S.H.M |
| D. | Both A and C |
| Answer» E. | |
| 589. |
At Murree Hills (Assume the value of g changes). If we use a simple pendulum as time standard then one-second duration will_____________? |
| A. | Increase |
| B. | Decrease |
| C. | Remains the same |
| D. | Is zero |
| Answer» B. Decrease | |
| 590. |
CFC is used in _________________? |
| A. | Refrigeration |
| B. | Aerosol spray |
| C. | Plastic foam industry |
| D. | All of above |
| Answer» E. | |
| 591. |
The linear momentum of an X-ray photon of wavelength 0.1A is_______________? |
| A. | 6.625x1023N-s |
| B. | 66.25x1023N-s |
| C. | 662.5x1023N-s |
| D. | data is insufficient |
| Answer» B. 66.25x1023N-s | |
| 592. |
Select an alternative from of uncertainly principle from the following_______________? |
| A. | ∆E = h/m∆c(1-cosθ) |
| B. | ∆E . ∆t = h |
| C. | mc2 = hv |
| D. | Any of above |
| Answer» C. mc2 = hv | |
| 593. |
Rest mass of a photon is________________? |
| A. | infinite |
| B. | zero |
| C. | very small |
| D. | 1.67 x 10-27 kg |
| Answer» C. very small | |
| 594. |
The existence of Ether wind was experimentally rejected by__________________? |
| A. | equal to its rest mass |
| B. | double of its rest mass |
| C. | infinite |
| D. | zero |
| Answer» D. zero | |
| 595. |
The maximum safe limit dose for persons working in a nuclear power station is ________________? |
| A. | 1 rem per week |
| B. | 5 rem per week |
| C. | 4 rem per week |
| D. | 3 rem per week |
| Answer» C. 4 rem per week | |
| 596. |
If a material object moves with speed of light its mass becomes ________________? |
| A. | equal to its rest mass |
| B. | double of its rest mass |
| C. | infinite |
| D. | zero |
| Answer» D. zero | |
| 597. |
A device for producing high-velocity nuclei is ________________? |
| A. | Cloud chamber |
| B. | Linear accelerator |
| C. | A mass spectrograph |
| D. | Wilson cloud chamber |
| Answer» C. A mass spectrograph | |
| 598. |
Which of the following will be a better shield against gamma rays ? |
| A. | Ordinary water |
| B. | Heavy water |
| C. | Lead |
| D. | Aluminum |
| Answer» D. Aluminum | |
| 599. |
Which branch of science plays an important role in the development of technology and engineering ? |
| A. | Chemistry |
| B. | Physics |
| C. | Geology |
| D. | Biology |
| Answer» C. Geology | |
| 600. |
Average distance covered by alpha particles in the air before its ionizing power ceases is called its_________________? |
| A. | Trajectory |
| B. | Range |
| C. | Firing level |
| D. | Limit |
| Answer» C. Firing level | |