# Physics GK Quiz Questions with Answers in English for Competitive Exams

Physics GK Question with Answer in English General Knowledge: Dear Aspirants here we have collected most important Physics Quiz Questions with Answers for various competitive exams i.e. UPPCS, SSC, CDS, IAS, NDA, BPSC, RRB, , RAS,RTS, and various other civil services competitive exams. These Topic Wise Physics Objective GK Quiz Questions with Answers General Knowledge Quiz are most imp. And some of the quizzes already have been asked in previous year competitive exam. Here we present Topic Wise Physics Objective GK Quiz Questions with Answers

## Physics GK Questions with Answers in English for Competitive Exams

Topic: Mechanics: GK Quiz Questions with Answers

Question: Why can a person jump higher on the surface of the moon than on the surface of the earth?

[A] It has divine influence on it.

[B] Moon has no atmosphere.

[C] The acceleration due to gravity in the Moon is less than that of the Earth.

[D] There is less chance of slipping on the moon

Answer: [C] The acceleration due to gravity in the Moon is less than that of the Earth.

Question: Ice floats in water but sinks in alcohol, what is the reason for this?

[A] Ice is lighter than water and heavier than alcohol.

[B] Ice is a solid substance whereas alcohol is a liquid.

[C] Ice is a bad conductor of heat

[D] None of the above

Answer: [A] Ice is lighter than water and heavier than alcohol.

Question: Why does an iron nail float in mercury while it sinks in water?

[A] Mercury is heavier than water.

[B] Density of iron is greater than that of water and less than that of mercury.

[C] Iron weighs more than water and less than mercury

[D] None of the above

Answer: [B] Density of iron is greater than that of water and less than that of mercury.

Question: What will be the weight of the water displaced by the boat for a steel boat floating in a lake?

[A] Equal to the weight of that part of the boat which is below the surface of the water of the lake.

[B] Equal to the weight of the boat

[C] less than the weight of the boat

[D] More than the weight of the village.

Answer: [A] Equal to the weight of that part of the boat which is below the surface of the water of the lake.

Question: Water pipe bursts due to extreme cold in winter night, what is the reason for this?

[A] Glass is a poor conductor of heat

[B] Because the pipe is made of plastic.

[C] Due to extreme cold.

[D] The volume of water increases when it freezes.

Answer: [D] The volume of water increases when it freezes.

Question: If the horse starts walking suddenly, then what is the reason for the possibility of the equestrian falling?

[A] Rest inertia

[B] Moment of inertia

[C] Law of Conservation of Mass

[D] Archimedes’ principle

Question: When a moving bus suddenly applies brakes, the passengers sitting in it fall in the forward direction, by which rule the score can be understood?

[A] Newton’s first law

[B] Newton’s second law

[C] Newton’s third law

[D] Law of Conservation of Mass

Question: Due to which Newton’s law of motion is it possible to swim in water?

[A] Newton’s first law

[B] Newton’s second law

[C] Newton’s third law

[D] All of the above

Question: If a carpet is beaten with a stick for cleaning, then which rule applies to it?

[A] First law of motion

[B] Second law of motion

[C] Third law of motion

[D] All of the above

Answer: [A] First law of motion

Question: If a person pushes a wall but fails to set it up, he does-

[A] No work

[B] Debt subjective work

[C] Positive work

[D] All of the above

Question: If we move from the equator to the poles, what is the change in the value of g?

[A] Increases

[B] Decreases

[C] Remains unchanged

[D] None of the above

Question: What will be the work done to hold a weight of 20 kg at a height of 1 meter above the ground?

[A] 20 joules

[B] 200 joules

[C] 1 joule

[D] 0 joules

Topic: Heat – Quiz Question with Answers

Question: The temperature of an object is an indicator of which of the following?

[A] The total energy of its molecules

[B] The average energy of its molecules

[C] The average kinetic energy of its molecules

[D] None of the above

Answer: [C] Average kinetic energy of its molecules

Question: Heat is a type of energy, which can be converted into work. Who first gave direct proof of this?

[A] Rumford

[B] Celsius

[C] Newton

[D] Fahrenheit

Question: Due to which the boiling water temperature in steam engine can be high?

[A] Due to the substance dissolved in water

[B] There is low pressure inside the boiler.

[C] High pressure inside the boiler

[D] None of the above

Answer: [C] There is high pressure inside the boiler

Question: Which of the following thermometers is called pyrometer?

[B] Thermoelectric Thermometer

[C] Gas thermometer

[D] Liquid Thermometer

Question: In which method of transmission of heat the molecules of matter do not move by themselves from one place to another?

[A] Driving

[B] Convection

[D] All of the above

Question: What is the transmission of heat through molecular composition called?

[A] Convection

[B] Driving

[C] Scattering

Question: Dew drops are not formed in strong windy night, what is the reason for this?

[A] The rate of evaporation is faster

[B] The temperature remains high

[C] Less moisture in the air

[D] None of the above

Answer: [A] The rate of evaporation is faster

Topic: Sound: Quiz Questions with Answers

Question: On which of the following does the pitch of sound depend?

[A] Frequency

[B] Intensity

[C] Velocity

[D] Dimensions

Question: In which medium the speed of sound will be maximum at a temperature of about 20 degree Celsius?

[A] Wind

[B] Granite

[C] Water

[D] Iron

Question: The whistling sound of an approaching train increases, while it decreases for a train going farther away. What event is this an example of?

[A] Raman Effect

[B] Doppler effect

[C] Joule Thomson effect

[D] Cropton effect

Question: What is the maximum limit of sound intensity in decibels above which a person cannot hear?

[A] 95dB

[B] 80db

[C] 12dB

[D] 90dB

Question: The characteristic of sound which differentiates a female sound from a male sound is called?

[A] Tolerance

[B] Strength

[C] Dimensions

[D] None of the above

Question: Which one of the following is not produced by sound waves in air?

[A] Polarization

[B] Refraction

[C] Diffraction

[D] Reflection

Question: Due to which sound waves produce resonance?

[A] Refraction

[B] Reflection

[C] Diffraction

[D] None of these

Question: Decibel is used to measure which of the following?

[A] Intensity of sound

[B] Intensity of light

[C] Intensity of heat

[D] None of the above

Topic: Light- Quiz Questions with Answers

Question: Who discovered the electromagnetic form of light?

[A] Snell

[B] Newton

[C] Max Well

[D] Einstein

Question: The reason behind the Rainbow formed is-

[A] Refraction and Dispersion

[B] Refraction and Reflection

[C] Scattering and Refraction

[D] Diffraction and Refraction

Question: Why do we see the sun only a few minutes east of the actual sunrise?

[A] Scattering of light

[B] Refraction of light

[C] Diffraction of light

[D] Total internal reflection of light

Topic: Electricity: Physics GK Quiz Questions with Answers

Question: Tungsten is used in the manufacture of filament of electric bulb, because its-

[A] has a high specific resistance

[B] has a high melting point

[C] has low specific resistance

[D] All of the above

Question: What is the device that converts alternating current into direct current called?

[A] Inverters

[B] Rectifier

[C] Transformers

[D] Transmitter

Question: If the electrical resistance of a typical material drops to zero, then what is that substance called?

[A] Superconducting

[B] Driver

[C] Semiconductors

[D] None of these

Question: When the condition of short path occurs, the current in the circuit,

[A] Becomes zero

[B] Increases substantially

[C] remains constant

[D] None of these

Question: The compass cannot be used to find out

[A] Magnetic north-south direction

[B] Polarity of magnet

[C] Magnet power

[D] The direction of the magnetic field

Question: In a uniform magnetic field the lines of force should be-

[A] Parallel to each other

[B] Convergent

[C] Apsari

[D] Intersection

Answer: [A] Parallel to each other

Question: The laws of electromagnetic induction are used to make which of the following?

[A] Galvanometer

[B] Voltmeter

[C] Electricity meter

[D] Generator

Question: Magnet is an essential part of which of the following planetary devices?

[A] call bell

[B] Fan

[C] Washing machine

[D] All of the above

Answer: [D] All of the above

Question: According to which of the following principle does ‘electric motor’ work?

[B] Ohm’s law

[C] Lange’s law

[D] Fleming’s law

Question: Which finger shows the direction of current in Fleming’s left hand rule?

[A] index finger

[B] Middle finger

[C] Thumb

[D] Ring finger

Question: Which of the following is electro-nonmagnetic?

[A] Nickel

[B] Cobalt

[C] Chromium

[D] Copper