Q. Which of the following is a dimensionless quantity, even when the measured quantity is not dimensionless? absolute error Gross error Relative error experimental error Answer: Relative error

Q. Which of the following have the same dimensions as Plank’s constant? Moment of momentum Moment of fierce Momentum/distance Force/distance Answer: Moment of momentum

Q. The zero error belongs to the category of: constant error personal error accidental error instrumental error Answer: instrumental error

Q. Which of the following have the same dimensions as v2r Where v is the speed of the particle describing a circular path of radius r. Force Impulse Acceleration Momentum Answer: Acceleration

Q. If the unit of force and length are doubled, the unit of energy will be 1/2 times 2 times 4 times 1/4 times Answer: 4 times

Q. The density of a liquid is 13.6 g cm-3. Its value ip S.I. is 13.6 kgm-3 136 kgm-3 13600 kgm-3 1360 kgm-3 Answer: 13.6 kgm-3

Q. Which of the following is not the name of physical quantity? Kilogram Density Impulse Energy Answer: Kilogram

Q. The weight of a body is 12g. This statement is not correct because The correct symbol for the unit of weight has not been used. The correct symbol for gram is gm. The weight should be expressed in kg. Of some reason other than those given above. Answer: The correct symbol for the unit

Q. Which is the system of unit SMS system MKP system FPS System CJS System Answer: FPS System

Q. The smallest value which is measured using an instrument is known as ________ Absolute count Least count Round off value Minimum count Answer: Least count