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MCQOPTIONS
This section includes 1341 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
Who invented the gas engine? |
| A. | diesel |
| B. | Charles |
| C. | Daimler |
| D. | Davy |
| Answer» D. Davy | |
| 752. |
Boiling point of liquid due to impurities? |
| A. | remains the same |
| B. | rises up |
| C. | happens to |
| D. | no relation |
| Answer» C. happens to | |
| 753. |
What is a decibel? |
| A. | a musical note |
| B. | measurement of a sound level |
| C. | a musical instrument |
| D. | none of these |
| Answer» C. a musical instrument | |
| 754. |
What part of the Sun is visible during a solar eclipse? |
| A. | chromosphere |
| B. | kirit |
| C. | aura |
| D. | no part |
| Answer» C. aura | |
| 755. |
Does diamond appear shiny? |
| A. | due to refraction |
| B. | due to scattering |
| C. | due to reflection |
| D. | due to internal reflection |
| Answer» E. | |
| 756. |
Which hypothesis does the first law of thermodynamics confirm? |
| A. | Energy Conservation |
| B. | heat protection |
| C. | job protection |
| D. | none of these |
| Answer» B. heat protection | |
| 757. |
Sonar is mostly used for? |
| A. | by astronauts |
| B. | by navigators |
| C. | by engineers |
| D. | by doctor |
| Answer» C. by engineers | |
| 758. |
What type of wave is a light wave? |
| A. | longitudinal wave |
| B. | transverse wave |
| C. | both of the above |
| D. | none of these |
| Answer» C. both of the above | |
| 759. |
The phenomenon of polarization in light proves that light is a wave? |
| A. | wavelike |
| B. | not the same as wave and particle |
| C. | wave-like |
| D. | like a particle |
| Answer» D. like a particle | |
| 760. |
Who first discovered the speed of light? |
| A. | galileo |
| B. | michaelson |
| C. | romer |
| D. | newton |
| Answer» D. newton | |
| 761. |
The speed of light with increase in temperature of the medium? |
| A. | increases |
| B. | usually falls |
| C. | stays the same |
| D. | happens |
| Answer» D. happens | |
| 762. |
What is the maximum speed of light? |
| A. | in diamond |
| B. | in the glass |
| C. | in water |
| D. | in a vacuum |
| Answer» E. | |
| 763. |
The reason for becoming a mirage? |
| A. | Full internal reflection |
| B. | refraction |
| C. | reflection |
| D. | Diffusion |
| Answer» B. refraction | |
| 764. |
When does solar eclipse happen? |
| A. | anticipation |
| B. | The day of the fourth moon |
| C. | on full moon |
| D. | any day |
| Answer» B. The day of the fourth moon | |
| 765. |
Total internal reflection occurs when light goes? |
| A. | from water to glass |
| B. | from air to water |
| C. | diamond in glass |
| D. | from air to glass |
| Answer» D. from air to glass | |
| 766. |
Due to which property a stick dipped in a vessel full of water appears to be bent? |
| A. | scatter |
| B. | buoyancy |
| C. | refraction |
| D. | reflection |
| Answer» D. reflection | |
| 767. |
How many colors does a rainbow show? |
| A. | 7 |
| B. | 10 |
| C. | 12 |
| D. | 5 |
| Answer» B. 10 | |
| 768. |
The color of the sky appears to be blue? |
| A. | due to diffraction |
| B. | due to scattering |
| C. | due to reflection |
| D. | due to refraction |
| Answer» C. due to reflection | |
| 769. |
What is the reason for the diffusion of light in the atmosphere? |
| A. | carbon dioxide |
| B. | water vapour |
| C. | helium |
| D. | dust particles |
| Answer» E. | |
| 770. |
On heating an object, its molecules? |
| A. | speed will increase |
| B. | the load will decrease |
| C. | load will increase |
| D. | the energy will decrease |
| Answer» B. the load will decrease | |
| 771. |
What is the application of low temperature engines? |
| A. | in submarine propulsion |
| B. | in superconductivity research |
| C. | in rocket technology |
| D. | in frost free refrigerators |
| Answer» D. in frost free refrigerators | |
| 772. |
The temperature of a liquid as it evaporates? |
| A. | will grow |
| B. | will remain unchanged |
| C. | will grow rapidly |
| D. | will decrease |
| Answer» E. | |
| 773. |
In these, when water falls from a height, then its temperature? |
| A. | happens to |
| B. | rises up |
| C. | neither decreases nor increases |
| D. | none of these |
| Answer» C. neither decreases nor increases | |
| 774. |
Where will the rice take longer to cook? |
| A. | on the beach |
| B. | in shimla |
| C. | on Mount Everest |
| D. | at the depths of the sea |
| Answer» D. at the depths of the sea | |
| 775. |
What will be the shape of a candle flame in the state of weightlessness? |
| A. | longer |
| B. | will remain the same |
| C. | round shape |
| D. | more little |
| Answer» C. round shape | |
| 776. |
A piece of ice is floating in a glass of water, when the ice melts what will be the effect on the level of the water? |
| A. | will increase will decrease |
| B. | first increase then decrease |
| C. | will remain the same |
| D. | none of these |
| Answer» D. none of these | |
| 777. |
Which of the following is not a unit of heat? |
| A. | calories |
| B. | °C |
| C. | joule |
| D. | kcal |
| Answer» C. joule | |
| 778. |
The temperature at which ice, water and vapor remain in equilibrium is called? |
| A. | freezing point |
| B. | triple point |
| C. | critical temperature |
| D. | boiling point |
| Answer» C. critical temperature | |
| 779. |
The apparent weight of a person in a lift is less than the actual weight, when the lift is going? |
| A. | up with acceleration |
| B. | down at the same speed |
| C. | up with the same speed |
| D. | down with acceleration |
| Answer» E. | |
| 780. |
Which of the following is not a unit of Newton-meter? |
| A. | force |
| B. | energy |
| C. | Work |
| D. | kinetic energy |
| Answer» B. energy | |
| 781. |
An iron needle sinks in water but the ship floats, on which principle is it based? |
| A. | Pascal's theory |
| B. | Archimedes' theory |
| C. | law of gravity |
| D. | none of these |
| Answer» C. law of gravity | |
| 782. |
The hair of the saving brush sticks together when it comes out of the water, the reason for this? |
| A. | friction |
| B. | surface tension |
| C. | elasticity |
| D. | viscosity |
| Answer» C. elasticity | |
| 783. |
Why is the shape of a liquid drop spherical? |
| A. | viscosity |
| B. | low load |
| C. | surface tension |
| D. | Atmospheric pressure |
| Answer» D. Atmospheric pressure | |
| 784. |
What is the working principle of washing machine? |
| A. | subconcentration |
| B. | Diffusion |
| C. | centrifugation |
| D. | dialysis |
| Answer» D. dialysis | |
| 785. |
If the length of the pendulum is increased to four times, then the time of swing of the pendulum? |
| A. | decreases |
| B. | becomes four times |
| C. | becomes a quarter |
| D. | is doubled |
| Answer» E. | |
| 786. |
The amount of buoyancy achieved by a solid partially or wholly submerged in a liquid depends on |
| A. | on the amount of liquid displaced by the solid |
| B. | on the weight of the solid |
| C. | on the mass of the solid |
| D. | none of these |
| Answer» B. on the weight of the solid | |
| 787. |
Any boat will sink, if it removes the water, |
| A. | equal to volume |
| B. | equal to the page |
| C. | equal to the density |
| D. | equal to weight |
| Answer» B. equal to the page | |
| 788. |
Why does a needle float on water? |
| A. | surface tension |
| B. | adhesion |
| C. | cohesion |
| D. | capillarity |
| Answer» B. adhesion | |
| 789. |
Oil rises in the lamp, because? |
| A. | oil is too light |
| B. | due to capillary action |
| C. | due to decreased surface tension |
| D. | oil is volatile |
| Answer» C. due to decreased surface tension | |
| 790. |
When we sit on a seat with rubber mattress or lie down on the mattress, its shape changes, such a substance is found in? |
| A. | kinetic energy |
| B. | fission energy |
| C. | stored energy |
| D. | potential energy |
| Answer» E. | |
| 791. |
Which of the following law justifies the statement that matter can neither be created nor destroyed? |
| A. | law of conservation of energy |
| B. | law of osmosis |
| C. | law of conservation of mass |
| D. | none of these |
| Answer» B. law of osmosis | |
| 792. |
When the speed of a moving object is doubled, what is its kinetic energy? |
| A. | doubles |
| B. | increases three times |
| C. | remains the same |
| D. | quadruples |
| Answer» E. | |
| 793. |
A cyclist turns around in a turn, so that? |
| A. | leans out |
| B. | leans inward |
| C. | leans forward |
| D. | doesn't budge at all |
| Answer» C. leans forward | |
| 794. |
When milk is stirred, butter separates from it, this is because |
| A. | gravitational force |
| B. | Frictional force |
| C. | centrifugal force |
| D. | heat |
| Answer» D. heat | |
| 795. |
Which of the following does not have kinetic energy? |
| A. | shot shot |
| B. | drawn bow |
| C. | moving hammer |
| D. | rushing water |
| Answer» C. moving hammer | |
| 796. |
What happens when a boat enters the sea from a river? |
| A. | slightly rises up |
| B. | sinks a bit |
| C. | remains unchanged |
| D. | none of these |
| Answer» B. sinks a bit | |
| 797. |
What is Newton's first law of motion called? |
| A. | law of conservation of momentum |
| B. | law of mobility |
| C. | law of inertia |
| D. | none of these |
| Answer» D. none of these | |
| 798. |
Two vectors that have different values? |
| A. | their direction will be different |
| B. | their result will be zero |
| C. | their result cannot be zero |
| D. | none of these |
| Answer» D. none of these | |
| 799. |
Skating on ice shows that the melting point of ice increases with increasing pressure. |
| A. | happens to |
| B. | rises up |
| C. | remains unchanged |
| D. | first decreases then increases |
| Answer» B. rises up | |
| 800. |
What is the refractive index of diamond? |
| A. | is 1.77 |
| B. | is 1.47 |
| C. | 1.44 is |
| D. | 2.42 is |
| Answer» E. | |