Lakhmir Singh & Manjit Kaur - Physics

Book: Lakhmir Singh & Manjit Kaur - Physics

Chapter: 3. Sources of Energy

Subject: Physics - Class 10th

Q. No. 27 of Long Answer Type Questions-Pg-157

Listen NCERT Audio Books to boost your productivity and retention power by 2X.


Calculate the energy released in joules when 5 g of a material is completely converted into energy during a nuclear reaction.

Mass of material,

m = 5g = 0.005kg,

Speed of light, c = 3 x 108m/s

We know that, E = mc2

E = 0.005 x (3 x 108)2

E = 4.5 x 1014J

Hence, energy released= 4.5 × 1014J

Chapter Exercises

More Exercise Questions