1. Which of the following is not the unit of distance? (a) Light year (b) Astronomical Unit (c) Parsec (d) Millisecond 2. The dimensional formula for ω in the relation y = A Sin ωt is (a) [M° L° T] (b) [M° L° T–1] (c) [ML° T°] (d) [M° L–1 T–1] 3. Dimensional formula for curie is (a) [M° L T–1] (b) [M° L–1 T°] (c) [M° L° T–1] (d) [M–1 L° T°] 4. Which of the following pairs of physical quantities does not have same dimensional formula. (a) Work and torque (b) Angular momentum and Planck's constant (c) Tension and surface tension (d) Impulse and linear momentum 5. If momentum (p), Area (A) and time (T) are takes as fundamental quantities, then energy has the dimensional formula : (a) [ p A½ T–1 ] (b) [ p A–½ T1 ] (c) [ p2 A T ] (d) [ p A–1 T ] 6. Out of 4.0 and 4.00, which is more accurate? (a) 4.0 (b) 4.00 (c) Both are equally accurate (d) Nothing can be said 7. The speed (v) of sound in a gas is given by v = k Px ρy Where K is dimensionless constant, P is pressure, and ρ is