We have provide GK MCQ Questions for physics GK questions with Answersfree PDF. Download based on the important concepts and topics given in the textbook as per new exam pattern. All these Physics GK MCQs Multiple Choice Questions with Answers provided here with detailed solutions. Use them as reference and be confident in the actual exam by practicing the MCQ Quiz Questions of Physics GK as much as you can. Each question has four options followed by the right answer.

## Q1. The wave theory of light can explain

(i) Comptom effect
(ii) Photoelectric effect
(iii) Black body spectrum
(iv) Interference of light

(iv) Interference of light

## Q2. Which of the following is true about an adiabatic wall?

(i) it allows flow of heat from one system to another
(ii) it allows flow of particles from one system to another
(iii) it does not allow flow of heat from one system to another
(iv) None of the above

(iii) it does not allow flow of heat from one system to another

## Q3. Which of these waves can be polarized ?

(i) Sound waves in air
(ii) Longitudinal waves on a string
(iii) Transverse waves on a string
(iv) Light waves

(iv) Light waves

## Q4. What do we call the temperature at which the liquid and the vapour states of the substance coexist?

(i) Freezing point
(ii) Melting point
(iii) Boiling point
(iv) Normal point

(iii) Boiling point

## Q5. The wave of theory of light is based on

(i) The laws of reflection
(ii) The laws of refraction
(iii) The inverse square law
(iv) Huyghens’ principle

(iv) Huyghens’ principle

(i) Solids
(ii) Liquids
(iii) Gases
(iv) All of them

(iv) All of them

## Q7. Which of the following waves cannot be polarised?

(ii) Ultra violet
(iii) Infrared
(iv) Ultrasonic

(iv) Ultrasonic

## Q8. Which of the following is correct about transverse mechanical waves?

(i) they can travel through solids and gases
(ii) they can travel through solids but not liquids
(iii) they can travel through solids and liquids
(iv) they can travel through gases but not solids

(ii) they can travel through solids but not liquids

## Q9. What is the phenomenon which established the transverse nature of light ?

(i) Reflection
(ii) Interference
(iii) Diffraction
(iv) Polarisation

(iv) Polarisation

## Q10. What do we call the maximum velocity of a fluid in a tube for which the flow remains streamlined?

(i) Hyper velocity
(ii) critical velocity
(iii) stream velocity
(iv) laminar velocity

(ii) critical velocity

## Q11. The p wave of a normal Electrocardiogram indicates

(i) Atrial depolarization
(ii) Ventricular repolarization
(iii) Atrial repolarization
(iv) Ventricular depolarization

(i) Atrial depolarization

## Q12. Which of the following is NOT a mechanical wave?

(i) Sound wave
(ii) Seismic wave
(iii) Light wave
(iv) Water waves

(iii) Light wave

## Q13. The Laser is a beam of radiations which are

(i) Non-coherent and monochromatic
(ii) Coherent and monochromatic
(iii) Non-coherent and non-monochromatic
(iv) Coherent and non-monochromatic

(ii) Coherent and monochromatic

## Q14. What is the phase of a vibrating particle at t = 0 known as?

(i) epoch
(ii) eon
(iii) path difference
(iv) period

(i) epoch

## Q15. Universal gates are

(i) AND and OR
(ii) OR and NOT
(iii) NAND and NOR
(iv) AND and XOR

(iii) NAND and NOR

## Q16. Which of the following is correct about the density of sea water?

(i) it is more than fresh water
(ii) it is less than fresh water
(iii) it is equal to the density of fresh water
(iv) None of the above

(i) it is more than fresh water

## Q17. Which one among the following components can not be developed within an ”integrated circuit”?

(i) Diode
(ii) Triode
(iii) Transformer
(iv) Transistor

(iii) Transformer

## Q18. What is the time period for a satellite orbiting close to the surface of earth?

(i) 84.6 minutes
(ii) 72.4 minutes
(iii) 44.8 minutes
(iv) 24 hours

(i) 84.6 minutes

## Q19. Where is a transistor most likely to be found ?

(i) Wrist watch
(ii) Fuse
(iii) Hearing aid
(iv) Fluorescent lamp

(iii) Hearing aid

## Q20. Which of the following laws state that the orbits of the planets are ellipses, with the Sun at one focus of the ellipse?

(i) Kepler’s First law
(ii) Kepler’s Second law
(iii) Kepler’s Third law
(iv) None of the above

(i) Kepler’s First law

## Q21. Which of the following is used for regulated electric supply ?

(i) Zener diode
(ii) Junction diode
(iii) Gun diode
(iv) Tunnel diode

(i) Zener diode

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