ALLCBTs

NEET Physics 2025 Questions and Solutions.

Published on Jul 11, 2025 • Education

Good day students! My name is Cyril, and in today’s tutorial, we’re diving into the most likely NEET 2025 Physics questions.
We’ll explore how to approach common problem types using correct reasoning, formulas, and a clear understanding of core physics concepts.

Let’s jump right in.

You can watch the full class in the video below:

Question 1: Path of a Charged Particle in a Magnetic Field

Question:
A charged particle enters a magnetic field at right angles to its velocity. What path does it follow?

Concept:

When a charged particle enters a magnetic field perpendicularly, it experiences a magnetic force that continuously changes the direction of its velocity — causing it to move in a circular path.

This is because the magnetic force acts as a centripetal force on the particle.

Correct Answer: Option B – Circular Path

Question 2: SI Unit of Magnetic Field Strength

Question:
What is the SI unit of magnetic field strength?

Answer:

The SI unit of magnetic field strength is the Tesla (T).

Also note: 1 Tesla=1 Weber/m21 \text{ Tesla} = 1 \, \text{Weber/m}^21 Tesla=1Weber/m2

Correct Answer: Tesla

Question 3: Resistance When a Wire is Stretched

Question:
A 2-meter-long wire has a resistance of 5 ohms. If it is stretched to double its original length, what will be its new resistance?

Key Formula:

When a wire is stretched, its volume remains constant. The resistance of a wire is given by: R=ρLAR = \rho \frac{L}{A}R=ρAL​

Where:

• RRR is resistance
• LLL is length
• AAA is cross-sectional area
• ρ\rhoρ is resistivity

When a wire is stretched to double its length, its area becomes one-fourth (since volume is constant).

So: R2=ρ2LA/4=4⋅ρLA=4RR_2 = \rho \frac{2L}{A/4} = 4 \cdot \rho \frac{L}{A} = 4RR2​=ρA/42L​=4⋅ρAL​=4R R2=4⋅5=20 ΩR_2 = 4 \cdot 5 = 20 \, \OmegaR2​=4⋅5=20Ω

Correct Answer: 20 ohms

Why These Questions Matter for NEET

These concepts test fundamental knowledge of:

• Electromagnetism
• SI units and dimensional analysis
• Properties of materials (resistance, resistivity)

Each question is not just factual — it checks whether you understand underlying relationships and transformations, a core part of NEET Physics.

Watch more educational videos and past questions: https://youtube.com/@allcbts

NEET 2025 Physics Strategy Tips

• Master your formulas – Derivations help you apply them flexibly
• Understand vector directions in magnetic and electric fields
• Practice proportional reasoning – like what happens when dimensions change
• Solve questions involving conceptual understanding + calculation

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Keywords:
NEET 2025 Physics, NEET physics magnetic field, resistance in wire NEET, charged particle circular path, Tesla SI unit, NEET likely physics questions