NEET 2025:A bob of heavy mass m is suspended by a light string of length l. The bob is given a horiz

For NEET Physics preparation, focus on NCERT textbooks first, then move to reference books. Create a topic-wise study plan covering Mechanics, Thermodynamics, Electromagnetism, Optics, and Modern Physics. Solve previous years’ questions and take regular mock tests. Pay special attention to conceptual clarity and numerical problem-solving skills.

Reflection is the bouncing back of light when it hits a surface, following the law that the angle of incidence equals the angle of reflection. Refraction is the bending of light when it passes from one medium to another, governed by Snell’s Law (n₁sin θ₁ = n₂sin θ₂), where n is the refractive index of each medium.

To solve physics numerical problems effectively, first understand the concept thoroughly. Then follow these steps: 1) Read the problem carefully and identify the given quantities and what needs to be found. 2) Draw a diagram if applicable. 3) Write down the relevant formulas. 4) Substitute the values with proper units. 5) Solve step by step. 6) Verify your answer by checking units and whether the result makes physical sense.