n21=v1/v2.

**Table of Contents**show

## What are the formulas in Chapter light Class 10?

- Mirror formula, 1v+1u=1f (f is focal length, u is image distance and u is object distance)
- Magnification (mirror) = hightofimagehightofobject=hiho=−vu (hᵢ is image height and hₒ is object height)
- Lens formula, 1v−1u=1f.

## What is the formula of force Class 10?

For a constant mass, force equals the mass times acceleration, i.e. F = m x a.

## What are the 4 laws of physics?

These four basic forces are known as fundamental because they alone are responsible for all observations of forces in nature. The four fundamental forces are gravity, electromagnetism, weak nuclear force, and strong nuclear force.

## What are the 3 basic laws of physics?

- First Rule: An object will remain at rest or in a uniform state of motion unless that state is changed by an external force.
- Second Rule: Force is equal to the change in momentum (mass times velocity) over time.
- Third Rule: For every action in nature there is an equal and opposite reaction.

## What is mirror formula?

The relation between focal length of mirror, distance of the object and distance of the image is known as mirror formula. It is given by. u1+v1=f1.

## What is U in mirror formula?

The distance between the object and the pole of the mirror is called Object distance(u). The distance between the image and the pole of the mirror is called Image distance(v). The distance between the Principal focus and the pole of the mirror is called Focal Length(f).

## What is a lens formula?

Lens equation or lens formula is an equation that relates the focal length, image distance, and object distance for a spherical mirror. It is given as, Lens Formula – 1/u + 1/v = 1/f. where.

## What are the 7 types of forces?

- Applied Force.
- Gravitational Force.
- Normal Force.
- Frictional Force.
- Air Resistance Force.
- Tension Force.
- Spring Force.

## What are the 5 basic forces?

- Competition in the Industry.
- Potential of New Entrants Into an Industry.
- Power of Suppliers.
- Power of Customers.
- Threat of Substitutes.

## What is SI unit of force?

The SI unit of force is the newton, symbol N. The base units relevant to force are: The metre, unit of length — symbol m. The kilogram, unit of mass — symbol kg.

## What is the formula of velocity Class 10?

Determine the object’s original velocity by dividing the time it took for the object to travel a given distance by the total distance. In the equation V = d/t, V is the velocity, d is the distance and t is the time.

## What are the 3 laws of refraction?

- The incident ray, reflected ray and the normal, to the interface of any two given mediums; all lie in the same plane.
- The ratio of the sine of the angle of incidence and sine of the angle of refraction is constant.

## What are the 12 universal laws?

- #1: The Law of Divine Oneness. Everyone and everything is connected in the world we live in.
- #2: The Law of Energy or Vibration.
- #4: The Law of Correspondence.
- #5: The Law of Cause and Effect.
- #6: The Law of Compensation.
- #7: The Law of Attraction.
- #9: The Law of Relativity.
- #10: The Law of Polarity.

## Is gravity a weak force?

Actually, gravity is the weakest of the four fundamental forces. Ordered from strongest to weakest, the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity.

## What is Newton’s 4?

Any object has a tendency to stay in its current state. This tendency is called inertia. Any object has a tendency to stay in its current state.

## Is gravity a law or theory?

Universal Gravity is a theory, not a fact, regarding the natural law of attraction. This material should be approached with an open mind, studied carefully, and critically considered. The Universal Theory of Gravity is often taught in schools as a fact, when in fact it is not even a good theory.

## How can I study physics?

- Make use of the preview that you did prior to the class. Again,
- Read the homework problems first.
- Read actively with questions in mind.
- Stop periodically and pointedly recall the material that you have.
- During your reading you will notice sections, equations, or ideas that.

## What is the first rule of physics?

Newton’s first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

## What is V in lens formula?

where u is the distance of the object from the lens; v is the distance of the image from the lens and f is the focal length, i.e., the distance of the focus from the lens. N.B. other sign conventions are sometimes used in the literature. = 2 6 − 1 6 = 1 6 So v = 6 cm.

## What is V and U mirror formula?

V is the image, image distance, so this is image distance, and that’s something we don’t know in this problem. And u is the object distance, these are the letters that we usually use for mirrors, object distance.

## What is V in n/c v?

When scientists talk about refraction, they use a formula. “n = c / v” “c” is the speed of light in a vacuum, “v” is the speed of light in that substance and “n” is the index of refraction.

## What is P and Q in mirror?

Mirrors and Lenses. For both mirrors and lenses: The object distance, p, is the distance from the object to the mirror or lens. The image distance, q, is the distance from the image to the mirror or lens. The lateral magnification, M, of the mirror or lens is the ratio of the image height to the object height.

## What is M vu?

m = − v u. According to sign conventions, for a concave mirror, the focal length is negative, the object distance is negative, the image distance is positive for a virtual image and negative for a real image.

## What is 1 V 1 U 1 f?

The lens formula 1v−1u=1f is valid when. medium on both sides of the lens is air.