Where, E is e.m.f, W is work done q is Charge. R = resistance, a = area of cross section, l = lenght. Indirectly proportional to thickness of conductor. Lenght if conductor and temperature of the conductor. S.I unit of potential difference is volt denoted by symbol (V). S.I unit of current is Ampere denoted by symbol (A)
The S.I unit of charge is coulumb denoted by symbol (C). Relationship between Loudness and intensity: L=K log I 10 Physics Formulas For ICSE Class 10 Chapter Current Electricity Time taken to hear the echo: t=2d/V or d=Vt/2Ģ.To determine the speed of the sound by echo method: V=2d/t Relationship between wave velocity V,frequency f,wavelengthĢ.Relationship between time period t and it’s frequency f of a wave : f=1/Tģ.Speed of longitudnal waves in a gaseous medium of density d at a pressure P is :Ĥ.Speed of trasverse waves in a streched string with tension t is given as : Physics Formulas For ICSE Class 10 Chapter Sound An Electromagnetic wave has a frequency of 500MHz and a wavelength of 60cm.ī) name the medium through which it is travelling.Calculate the frequency of yellow light of wavelength 550 nm.
Relation between speed, frequency and wavelength of electromagnetic waves : IMP Physics Formulas For ICSE Class 10 Chapter Spectrum Find its focal length and state the kind of lens. Q4: A convex lens forms an inverted image of size same as that of the object which is placed at a distance 60 cm in front of the lens. Q3: An object is placed at a distance of 20 cm in front of a concave lens of focal length 20cm. Q2: A lens forms the image of an object placed at distance 15 cm from it at a distance 60 cm in front. Q1: A: at what position a candle of length 3 cm be placed in front of a convex lens so that its image of length 6cm be obtained on a screen placed at a distance of 30cm behind the lens? Physics Formulas For ICSE Class 10 Chapter Refraction Through A Lens The refractive index of transparent surfaces is always greater than 1. Speed of light in vaccum or air ÷ speed of light in that medium. Physics Formulas For ICSE Class 10 Chapter Refraction of Light at Plane Surfacesįor normal incidence angle of incidence is zero degree. Work done on the load = load × distance moved by the loadįor greater efficiency the pulleys in the lower block should be as light as possible. Work done by effort = effort × distance moved In this system the effort gets multiplied n times therefore it acts as a force multiplier. Į = L/n, n = number of pulleys, L = load. Velocity Ratio = Velocity of Effort ÷ Velocity of load Physics Formulas For ICSE Class 10 Chapter Machineġ. Thus work done on a body is equal to increase in Kinetic energy. The energy of a body is its capacity to do work.Ģ. If displacement is in direction opposite to the force then work done is negative.įor a constant force with change in displacement Power = Force × average speed. If the displacement is normal to the direction of force then work done is zero.ģ. If the displacement is in direction with the force then work done is positive.Ģ. Physics Formulas For ICSE Class 10 Chapter Work Energy and Powerġ joule = 10⁵ dyne × 10² cm = 10⁷ dyne cm = 10⁷ ergġ. Parallelogram or rectangular lamina or square or rhombus = The point of intersection of diagonals. Triangular Lamina = The point of intersection of medians.ĩ. Hollow Cone = At a height h/3 from the base.Ĩ. Solid cone = At a height h/4 from the base, on its axis.Ħ. Solid or Hollow = Mid point of Axis of Cylinder.ĥ. Solid or hollow = Geometric center of sphere.Ĥ. Principle of moments = Sum of anticlockwise moments = Sum of clockwise moments.ģ. Moment of Couple = Either force × perpendicular distance between the two forces.ģ. Moment of force = Force × Perpendicular distance of force.Ģ. Radioactivity Physics Formulas For ICSE Class 10 Chapter Forceġ. These formulas for Physics in Standard 10th ICSE are very important as it will help you to solve many difficult questions which can come in your examsġ0. You can also refer to ICSE class 10 physics solutions which have been provided on our website. Students should refer to ICSE class 10 physics formulas given here prepared as per the chapters given in Selina physics class 10 book which has been recommended for class 10 students.
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