Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


kya mtlb...
class 10th ka hah..
me ni kar sakta
1 ?? 2 ?? 3 - B and 4 - D


The Brainliest Answer!

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
1. ans - d.
The candle will extinguish if the CO₂ is formed in the reaction. CO₂ will be formed in tube I and IV only. So It will not be extinguished in tubes II and III. 

2. ans - a
If object is located at infinity, then an inverted image will be formed at the focus. So if you remove the screen and see, you will see an inverted tree.

3. ans - b.
Even if the lower portion is covered, the upper portion will still act as a lens and form the complete image. But the clarity of the image will be less. So we can say it fades.

4. ans - b
When object is placed between focus and the converging lens, virtual,erect and magnified image is formed on the same side of the lens.

2 5 2
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts