## How do you find the focal length of a concave lens experiment?

Place the thin optical needle which is the object needle O near-zero end of the upright which is moveable. Place the object needle upright at a distance nearly 1.5 times the focal length of the lens. The tip of the needle should be horizontal to the optical centre of the lens. What is the focal … Read more

## Is solving HC Verma enough for JEE Advanced?

H.C. Verma is indeed a good book for JEE preparation and it contains an in-depth explanation of the topics. Candidates can use it to gain a deeper understanding of the concepts. However, for numerical and to practice solving problems, you can make use of additional books like D.C. Pandey, etc. Where can I find HC … Read more

## What are Newton’s 1st 2nd and 3rd laws of motion class 9?

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction. What … Read more

## Is 11th class physics tough?

Yes, class 11 Physics syllabus is considered as the toughest of all the subjects by various students. Is physics class 11 Easy? Studying for Class 11 Physics is not easy. Hence, we at Vedantu, have prepared the solutions for all the chapters of Class 11 accurately to help you during your exam times. How can … Read more

## What is refraction and its laws?

Refraction : The phenomenon of change in the direction of light when it passes from one transparent medium to another is called refraction. Laws of refraction: (i) The incident ray, the refracted ray and the normal to the interface of two transparent media at the point of incidence, all lie in the same plane. What … Read more

## What is the law of parallelogram of vector addition?

The parallelogram rule says that if we place two vectors so they have the same initial point, and then complete the vectors into a parallelogram, then the sum of the vectors is the directed diagonal that starts at the same point as the vectors. What is parallelogram law of addition in physics? The Parallelogram law … Read more

## How do you calculate thrust and pressure?

we know that Thrust = Pressure × Area and pressure is force/area. So we substitute pressure in the thrust formula and we get: Thrust= Force/Area*Area. Which simplifies to Thrust = Force. How do you do Numericals in physics class 9 gravitation? What is thrust and pressure in physics class 9? Thrust: The force acting on … Read more

## Why integration is used in physics?

What Are Differentiation Formulas? The differentiation formula is used to find the derivative or rate of change of a function. if y = f(x), then the derivative dy/dx = f'(x) = limΔx→0f(x+Δx)−f(x)Δx lim Δ x → 0 ⁡ What is differentiation and integration in physics class 11? Differentiation is used to study the small change … Read more

## What’s the angle of reflection?

The angle of reflection of a ray or beam is the angle measured from the reflected ray to the surface normal. From the law of reflection, , where is the angle of incidence. is measured between the ray and a line normal to the surface that intersects the surface at the same point as the … Read more

## What are the math levels in college?

What is college-level math? Entry-level math in college is considered the stepping stone to more advanced math. Algebra 1, trigonometry, geometry, and calculus 1 are the basic math classes. Once you have successfully navigated through these courses, you can trail blazed through more advanced courses. What is the hardest class in college? It shouldn’t surprise … Read more