Q.1. Should the centre of mass of a body necessarily lie inside the body? Explain. Answer Answer: No, it may lie outside the body. In case of semicircular ring, it is at the centre which is outside the ring. Q.2. What physical quantities do the following represent?(a) Moment of linear momentum(b) Rate of change of … Read more
Q.1. State Newton’s first law of motion. Answer Answer: Everybody continues to be in state of rest or of uniform motion in a straight line unless compelled by some external force to act otherwise. Q.2. Two objects having different masses have same momentum. Which one of them will move faster. Answer Answer: Object with smaller … Read more
Q.1. What do you mean by triple point ? Answer Answer: It is a particular point in the phase diagram, representing a particular pressure and temperature at which a substance can coexist in all three phases in solid, liquid and gas. Q.2. Why the triple point of water is considered as a standard fixed point … Read more
Very Short Answer Type Questions [1 Mark Each] 1. Which of the following conditions is not sufficient for SHM and why? (a) Acceleration α displacement (b) Restoring force α displacement Answer Answer: Condition (a) is not sufficient as the direction of acceleration is opposite to displacement and that needs to be mentioned. 2. A particle … Read more
