Question

2. Which one of the following statements is Following statements is not a valid scientific hypothesis? d. Our universe is surrounded by another, larger universe, with WHICH we can have absolutely no contact . Any two objects dropped from the same height above the surface of the earth will hit the ground at the same time, as long as air resistance is not a factor. Justify your answer. 3. Is it possible for a valid scientific hypothesis to be incorrect? a. Yes b. No Justify your answer. 4. If this class helps you discover that some things you've believed for a long time are not true, how would you feel? a. Pleased to change my opinion. b. Irritated. c. Initially irritated, but eventually pleased. d. Some other feeling or not sure. Explain.

Answer 1

2. correct option is (a)

Because still we don't have any proof that there is something present beyond the universe and our universe is so large that we are not able to reach at it's edge so in such case how we can give any statement about the matter present outside this universe

3. Yes, it is possible that a valid scientific hypothesis may become wrong if we got some evidence against hypothesis

4.a. Pleased to change my opinion

5. So that we can minimize the chances of error due to human measurement or instrumental error.

6. average value minimize the error in measurement.

7. As we know that error in density is equal to

error +

$error(\frac{d\rho }{\rho })=\frac{dm}{m}+3\frac{dl}{L}$

Hence length or diameter will contribute most in the total error