Question

write all formula of physics in class 10​

Answer 1

to Kitab kya dikhane k liye li ho ,,jao isme se padho.....

Answer 2

Answer:

Electricity ;

1)Current I=> $I = \frac{Q}{t}$ => Q = Charge => t = time taken

2)Voltage V=>V = E / Q or V = W / Q

E = Energy, W = Work done

3)Resistance R=>R = ρl / A  => ρ = Resistivity,

l = length, A = Area or,R = V / I

4)Power P=> P = VI

                                                                   

All formulas from the 'Light' chapter

1 . Mirror formula,

$\frac{1}{v} +\frac{1}{u} =\frac{1}{f}$ (f is focal length, u is image distance and u is object distance)

2. Magnification (mirror) =

$\frac{height of image}{height of object} = \frac{h_{i} }{h_{o} }$$= \frac{- v}{u}$ (hᵢ is image height and hₒ is object height)

3. Lens formula,

$\frac{1}{v} -\frac{1}{u} = \frac{1}{f}$

4. Power of a lens,

P=1/focal length (f)

5. Absolute refractive index ,

n= $\frac{speed of light in vacuum}{speed of light in medium }$

6.Relative refractive index,

n₂₁=speed of light in medium 1/speed of light in medium 2

7. Radius of curvature, =

2×focal length =2f

                                                                   

CHAPTER- Magnetic Effects of Current

Formula 1:

B (inversely proportional) (I/r) ; where B= Strength of Magnetic Field, I=current passed through conductor and r=distance from conductor

Formula 2:

B=(µI/2πr) where B= Strength of Magnetic Field, r= distance from conductor, I=current passed through conductor and µ= permeability of medium.

                                                                                   

human eye and colorful world ,

power of lens: p=1/f

power of combination of lens = p= 1/f₂+1/f₂