(a) \(15\% \;of \;250\)
= \(\frac{15}{100}\times250\)
= \(\frac{75}{2}\)
= \(37.5\)
(b) \(1\; hour=60\; minutes\)
\(1\%\;of \;60\; minutes\)
= \(\frac{1}{100}\times60\)
= \(\frac{3}{5}\;minutes\)
(c) \(20\%\;of\; Rs\;2500\)
= \(\frac{20}{100}\times2500\)
= \(Rs\;500\)
(d) \(75\%\;of \;1\;kg\)
= \(\frac{75}{100}\times1\)
= \(0.75\;kg\)
= \((0.75\times1000)g\)
= \(750\;g\)
Match the items given in Column I with one or more items of Column II.
Column I | Column II |
(a) A plane mirror | (i) Used as a magnifying glass. |
(b) A convex mirror | (ii) Can form image of objects spread over a large area. |
(c) A convex lens | (iii) Used by dentists to see enlarged image of teeth. |
(d) A concave mirror | (iv) The image is always inverted and magnified. |
(e) A concave lens | (v) The image is erect and of the same size as the object. |
- | (vi) The image is erect and smaller in size than the object. |