Question

1 J of energy is equivalent to
1) 1.25 x 10^-19 eV
2) 6.25 x 10^18 eV
3) 6.25 x 10^-19 eV
4) 6.25 x 10^20 eV​

Answer 1

1 J of energy is equivalent to

6.25×10¹⁸ eV (electron-volt) [Option.2]

Some Extra Information:-

• Energy is defined as the capacity to do

work. More the energy in a body, more

is the work the body can do.

• Energy is a scalar quanity.

• The S.I. unit of energy is Joule [J]

The C.G.S unit of energy is erg.

• Other units of energy are electron volt

[eV], calorie [cal] , kilowatt-hour [kWh].

• → 1 ev = 1.6×10-19 J

→ 1 cal = 4.186 J

→ 1 kWh = 3.6×10⁶ J

• Some forms of energy, available

naturally or created artifically are as

follows :-

1. Chemical Energy

2. Heat Energy

3. Light Energy

4. Electrical Energy

5. Nuclear Energy

6. Mechanical Energy