Which one of the following spring balances will record the lowest reading?
CORRECT ANSWER IS "B"
Two parallel rays of light strike a concave lens. Which of the following correctly shows the passage of the rays after passing through the lens?
I think it's D
Geeta has given some statements about the materials given in the box.
Which of the statements given by her is/are correct?
AAir is a heterogeneous mixture.
BWater, sugar and carbon dioxide are compounds.
CMercury and nitrogen are elements.
DBoth B and C.