Free Physics Questions for Polytechnic Exams

Polytechnic | Physics QBank

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ScholarWorm welcomes our aspirants who are always hungry for more knowledge. We are here with our Free Physics QBank for Polytechnic Entrance Exams to help our students to practice regularly and perform at best of their ability in their exams.

Instruction to Create Question Set :-

1. The Test Paper is AI generated.

2. On clicking the button below the AI bot creates a set of 20 Questions from the pool of questions that is being updated regularly by our expert faculties.

3. A Timer is set for each Test Set, once time is up the AI will automatically submit the test.

4. New Question Set can be created by going backwards and repeating the above steps.

Note :- Number of Questions and Timer is not customizable in Free QBanks.

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#1. A piece of wire of resistanceR is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of the combination is R’ , the ratio R/R' is

1/5

1/25

#2. S.I unit of magnetic flux is

Tesla

Weber

weber/meter

newton

#3. If the radius of curvature of mirror and 'f' is focal length, which of the following relation is correct ?

R - 2f = 0

2R = f

R +2f =0

R= f

#4. 1 ohm is equal to

Volt × Ampere²

1 volt / 1 ampere

1 ampere / 1 volt

Volt × Ampere

#5. The magnetic field of a solenoid carrying a current is similar to that of a

Bar Magnet

Iron Core

Electric Motor

Resistor

#6. Which of the followig is true in case of concave lens ?

Inverted and virtual image

Erect and real image

Inverted and real image

Erect and virtual image

#7. The twinkling of star is due to

Atmospheric rarefaction

Atmospheric dispersion

Scattering of light by particles in atmosphere

Atmospheric diffraction

#8. A current through a horizontal power line flows in East to west direction. The direction of magnetic field at a point directly below the power line is

South to North

East to west

West to East

North to South

#9. SI unit of potential difference is

Volt

Coulomb

Ampere

Joule

#10. Which of the following is not an example of conventional source of energy?

Wind Energy

Nuclear Energy

Gobar Gas

Wood

#11. splitting of light into seven colours is caled

Refraction

Reflection

Scattering

Dispersion

#12. The safety device used for protecting the circuits from short circuiting is

Generator

Motor

Resistor

Fuse

#13. According to Flaming’s left hand rule, the fore finger is pointed towards the direction of

Magnetic field

Motion of the conductor

Force exerted

Electric current

#14. Which of the following indicates the lens formula ?

f = 1/(v-u)

f = 1/v -1/u

1/f = 1/v -1/u

1/f = v -u

#15. The scattering of light by the colloidal particles is

Tyndall effect

Raman effect

Thermal effect

Balwin effect

#16. The change in focal length of an eye lens is caused by the action of the

Pupil

Iris

Cilliary Muscles

Retina

#17. Drift speed of electron in an electric conductor is

70 mm/s

7 mm/s

none

0.07 mm/s

#18. One ampere current is

Coulomb × second²

Coulomb / second

2 Coulomb / second²

Coulomb × second

#19. The direction of the electric current is taken

There is no direction for the current due to flow of electrons

Perpendicular to the direction of flow of electrons

Opposite to the direction of flow of electrons

Same as the direction of flow of electrons

#20. SI unit of power of a lens is

Centimeter

Dioptre

Metre

Watt

Finish

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