Question 2What is the least possible error in using a rule graduated in centimetres?A.0.1cmB.0.5cmC.1.0cmD.2.0cmObjective Show full explanation
Question 3Which of the following affects the period of a simple pendulum?(I)mass of pendulum bob(ii) length of the pendulum(iii) acceleration due to gravityA.I,II and IIIB.II and III onlyC.I and III onlyD.I and II onlyObjective Show full explanation
Question 4A boy sits in a train moving with a uniform speed on a straight track. If from his outstretched palm he gently tossed a coin vertically upwards, the coin will fall.A.in front of his palmB.behind his palmC.beside of his palmD.into his palmObjective Show full explanation
Question 5A machine required 100J of work to raise a load of 500N through a vertical distance of 1.5m Calculate the efficiency of the machineA.80%B.75%C.50%D.33%Objective Show full explanation
Question 6One of the most important application of bimetallic strip is found in the construction ofA.a thermostatB.an altimeterC.a thermocoupleD.a hygrometerObjective Show full explanation
Question 7At constant pressure, the density of a fixed gas isA.constant with temperatureB.proportional to its volumeC.inversely proportional to its temperatureD.independent of its temperatureObjective Show full explanation