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.

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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. The magnetic field inside a long straight solenoid carrying current

Increases as we move towards its end

Is same at all points

Decreases as we move towards its end

Is zero

#2. 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

1/25

1/5

#3. The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is called

Accommodation

Far sightedness

Near Sightedness

Presbyopia

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

Erect and real image

Inverted and virtual image

Inverted and real image

Erect and virtual image

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

Iron Core

Electric Motor

Resistor

Bar Magnet

#6. A 10N force acts on a rectangular conductor of 5cm long placed perpendicular to a magnetic field. if the current in conductor is 50 A , then B

2.5 tesla

4 tesla

25 tesla

0.4 tesla

#7. The number of field lines passing through the the plane of area 'A' perpendicular to the magnetic feild is called

Magnetic flux density

Magnetic induction

solenoid

Magnetic flux

#8. The effective diameter of the circular outline of a spherical lens is called

Principal focus

Pole

Aperture

Optic Center

#9. parallel rays incident on a concave mirror, on reflection meet at what point ?

At pole

Any where

At focal point

At centre of curvature

#10. S.I unit of Eletric current

watt

ohm

Ampere

Volt

#11. Which one of the following material is used to make lens ?

Plastic

Clay

Iron

Glass

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

Magnetic field

Electric current

Motion of the conductor

Force exerted

#13. SI unit of power of a lens is

Metre

Centimeter

Watt

Dioptre

#14. The AC supply of the houses is of 220 V, 50Hz. One of the wires in this supply is with red insulation called as

Neutral wire

Earth wire

None of the above

Live wire

#15. A ray parallel to the principal axis after reflection from a concave mirror will pass through

Principal axis

Principal focus

Centre of Curvature

Radius of Curvature

#16. The ratio of sine of angle of incidence to the sine of angle of refraction is a constant for given pair of media. This law is known as

Maulas law

Snell’s law

Pascal’s law

Stefan's law

#17. One ampere current is

Coulomb × second

Coulomb × second²

Coulomb / second

2 Coulomb / second²

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

Cilliary Muscles

Retina

Iris

Pupil

#19. Image formed by a plane mirror is always

Virtual and inverted

Real and inverted

Real and erect

Virtual and erect

#20. Least distance of distinct vision for normal eye is

25cm

15cm

35cm

30cm

Finish

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