Science, asked by rudrabuch81107, 4 months ago

answer this question fast
.​

Attachments:

Answers

Answered by studyj690
1

Answer:

1. because matchstick has rough surface and you know that friction is more powerful on rough surface and friction is also produces heat on rough surface thus the matchstick catch fire.

2. An led is more efficient device than a bulb because bulb take high power of electricity than the bulb is glow and led takes few power of electricity than led is glow. thus An led is more efficient device than a bulb.

Similar questions