Q. If force (F), work (W) and velocity (v) are taken as fundamental quantities. What is the dimensional formula of time (T)? Answer:

Q. The atmospheric pressure is 106 dyne/cm². What is its value in SI unit? 105 newton/m²106 newton/m²104 newton/m²103 newton/m² Answer: 105 newton/m²

Q. A force F is given by F = at + bt², where t is time. What are the dimensions of a and b? MLT-1 and MLT0MLT-3 and ML2T4MLT-4 and MLT1MLT-3 and MLT-4 Answer: MLT-3 and MLT-4

Q. In a system of units if force (F), acceleration (A) and time (T) are taken as fundamentals units then the dimensional formula of energy is FA2TFAT2FA2TFAT Answer: FAT2

Q. Physical quantities are quantities such as degrees, radians and steradiansquantities such as length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensityquantities such as pounds, dollars and rupeesquantities such as kilos, pounds and gallons ...

Q. The dimensions of kinetic energy is Answer:

Q. The length and breadth of a rectangular sheet are 16.2 cm and 10.1cm, respectively. The area of the sheet in appropriate significant figures and error is 164 ± 3 cm2163.62 ± 2.6 cm2163.6 ± 2.6 cm2163.62 ± 3 cm2 Answer: 164 ± 3 cm2

Q. Which of the following pairs has the same dimensions? Specific Heat and Latent HeatImpulse and MomentumSurface Tension and ForceMoment of Inertia and Torque Answer: Impulse and Momentum

Q. The equation of state of some gases can be expressed as Vander wal equation i.e. (P +a/v2)(V – b) = RT Where P is the pressure, V is the volume, T is the absolute temperature and a, b, R are constants. The dimensions of ‘a’ are: Answer:

Q. Which of the following pairs of physical quantities does not have same dimensional formula? Work and torque.Angular momentum and Planck’s constantTension and surface tensionImpulse and linear momentum Answer: Tension and surface tension