class 10 physics

Law of Combination of Resistance in Parallel - Connect two resistors 'R 1 ' and 'R 2 ' in parallel to one another between the points A and B. Connect this combination to a battery of potential 'V..

Mirror formula is the relationship between object distance (u), image distance (v) and focal lengt..

For both type of lenses, the height of the object is always positive, while the height of the image may be + or - depending upon its nature. As per sign convention for lenses, the height of an inverted and real image is negative and hence the magnification of a lens is negative when it produces a..

>Join the pins R and S and produce the line on both sides. The ray O 1 E is the emergent ray. Join OO 1 . It is the refracted ray. With O as centre, draw a circle of a convenient radius 'r' in such a way that it cuts the incident and the refracted rays at F and G respectively. From F and G draw per..

The incident ray, the refracted ray and the normal to the surface at the point of incidence all lie in one plane. For any two given pair of mediums, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant. The above law is called Snell's law after..

A radioactive nucleus or element emits an alpha or a beta particle and gets converted into a new nucleus or element. The process of destruction of the original nucleus during the formation of new nucleus due to radioactivity is called Radioactive decay or disintegration. When a α - particl..

Radioactive elements can undergo a number of different reactions in the process of forming a stable element. Nuclear fission is one such reaction. Fission means to divide. Elements having atomic numbers greater than 90 can undergo fission. Uranium is one such element. In nuclear fission, the nucle..

C - H bonds and two O = O bonds are broken to form 2C = O and 4 O - H bonds. Energy required to break C - H bond is 4.5 KJ/mole and that of O = O bond is 497 KJ/mole. Energy released in the formation of O - H bond is 467.25 KJ/mole and that of C = O bonds is 803.33 KJ/mole. So the above reaction ..

The relationship between distance of the object (u), distance of the image (v) and focal length (f) of the lens is called lens formula or lens equation. This lens formula is applicable to both convex and concave lenses. Note : Points to be remembered while using the lens formula. The value..