AP Polycet (Polytechnic) 2025 Previous Question Paper with Answers And Model Papers With Complete Analysis


AP POLYCET 2025
Section — B
PHYSICS

61)The region surrounding a magnet in which the influence of that magnet can be detected is called

A) magnetic length

B) magnetic dipole

C) magnetic field

D) magnetic pole strength

View Answer

C) magnetic field
Explanation:Region around a magnet with magnetic effect
→ magnetic field
62)If the electric current through a copper wire increases, the magnitude of the magnetic field produced at a given point:

A) decreases

B) remains the same

C) increases

D) becomes equal to zero

View Answer

C) increases
Explanation:More current → stronger magnetic field
→ increases
63)The magnetic field at all points inside a solenoid carrying electric current:

A) is non-uniform

B) is uniform

C) does not exist

D) is always zero

View Answer

B) is uniform
Explanation:Magnetic field inside a solenoid is
→ uniform
64)The direction of force on a current carrying conductor in a magnetic field is given by

A) Fleming’s left-hand rule

B) Newton’s laws of motion

C) Ohm’s law

D) Joule’s law of heating

View Answer

A) Fleming’s left-hand rule
Explanation:Direction of force
→ Fleming’s left-hand rule
65)The magnetic field produced by a current carrying circular loop is strongest at

A) the center of the loop

B) a point outside the loop

C) the outer surface of the loop

D) every point inside the loop

View Answer

A) the center of the loop
Explanation:Strongest magnetic field in circular loop
→ the center of the loop
66)In an electric circuit, the device used to prevent damage to the electrical appliances due to overloading is:

A) electromagnet

B) electric fuse

C) battery

D) electric cell

View Answer

B) electric fuse
Explanation:Device to prevent damage from overload
→ electric fuse
67)Which of the following is not an alloy?

A) Constantan

B) Manganin

C) Nichrome

D) Iron

View Answer

D) Iron
Explanation:Iron is a pure element, others are alloys
→ Iron
68)Identify the wrong statement among the following:

A) Magnetic field lines are closed curves

B) Inside the magnet, the direction of field lines is from north pole to south pole

C) The magnetic field is stronger where the magnetic field lines are crowded

D) Magnetic field lines do not intersect with each other

View Answer

B) Inside the magnet, the direction of field lines is from north pole to south pole
Explanation:Wrong statement: Inside magnet, field is from south to north, not north to south
→ Inside the magnet, the direction of field lines is from north pole to south pole
69)SI unit of electrical resistivity is

A) Ωm

B) Ω/m

C) m/Ω

D) Ωm2

View Answer

A) Ωm
Explanation:SI unit of resistivity
→ Ωm
70)Which of the following is an insulator?

A) Copper

B) Silver

C) Aluminium

D) Rubber

View Answer

D) Rubber
Explanation:Rubber is a poor conductor
→ Rubber
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