Month: May 2021

Two mirrors of the same length are arranges as show in the diagram. A ray of light NO strikes the system at O and emerges along PQ. The emergent ray has been deviated through A 220o B 200o C 210o D 180o   ↪ Answer   22 A magnetic needle is suspended first at the earth’s north magnetic pole and then at a point on the magnetic equator. The respective angles between the needle and the horizontal are A 0o and 0o B 60o and 60o C 90o and 90o D 90o and 0o   ↪ Answer   23 A hydrometer is an instrument for measuring the A a depth of water of water in a vessel B relative density of a liquid by the method of flotation C relative density of a liquid by finding the…

Evaluate (212)3 – (121)3 + (222)3 A (313)3 B (1000)3 C (1020)3 D (1222)3   ↪ Submit Answer  to Oliveloaded.com   2 Factorise (4a + 3) 2 – (3a – 2)2 A (a + 1)(a + 5) B (a – 5)(7a – 1) C (a + 5)(7a + 1) D a(7a + 1)   ↪ Submit Answer  to Oliveloaded.com   3 Find all median of the numbers 89, 141, 130, 161, 120, 131, 131, 100, 108 and 119 A 131 B 125 C 123 D 120   ↪ Submit Answer  to Oliveloaded.com   4 Find all real number x which satisfy the inequality 13 (x + 1) – 1 > 15(x + 4) A x < 11 B x < -1 C x > 6 D x > 11   ↪ Submit Answer  to Oliveloaded.com     5…