The dimensional formula for ω in the relation y = A sin ωt is-
Out of 4.0 and 4.00, which is more accurate?
If q1 = (10 ± 0.1)0C and q2 = (20 ± 0.4) 0C, thenq2 – q1 = …..
Pascal-second has the dimensions of -
In a system of units of force (F), acceleration (a) and time (T) are taken as fundamental units, then the dimensional formula of energy is-
The correct order in which the dimensions of length increases in the following quantities is (i) Volume, (ii) Stress (iii) Impulse (iv) Planck's constant
A wire has a mass (0.3 ± 0.003) g, radius (0.5 ± 0.005) mm and length (6 ± 0.06) cm. The maximum percentage error in the measurement of its density is-
The ratio of the dimensions of Planck's constant and that of moment of inertia is the dimensions of-
Density of substance d = m/v, where m = (20 ± 0.2) kg and V = (10 ± 0.1)m3. Calculate the percentage error in d
A wire is of mass (0.3 ± .003) gm. The radius is (0.5 ± 0.005) cm and length is (6 ± .06) cm. The maximum percentage error in density is -
A wave is represented by y = a sin (At – Bx + C) Where A, B, C are constants. The Dimensions of A, B, C are (here y and x are displacement and distance and t is time) -
Density of liquid is 15.7 g/cm3. Its value in the international system of units is-
Given that force (F) is given F = Pt–1 + Qt. Here t is time. The unit of P is same as that of -
If the unit of force is 1 kilo-newton, the length is 1 km and time is 100 second, what will be the unit of mass ?
If 1 g cm s–1 = x newton-second, then the number x is equal to
If force F, acceleration A and time T be taken as fundamental physical quantities, then the dimensions of length in this system of units are-
In a particular system, the units of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. The unit of force in this system will be-
The dimensions of h/R is -
(where :Rydberg's constant & h : plank constant )
If velocity (V) and acceleration (a) are taken as fundamental quantities, then what are dimensions of time -
The equivalent focal length of a combination of two thin lenses (having focal length f1& f2) can be given by 1/fnet= 1/f1 + 1/f2 . If errors in measurement of f1& f2 are ± 0.5 cm and ± 0.3 cm and given that f1 = f2 . Then errors in equivalent focal length is -
Which of the following is not the name of a physical quantity ?
Energy per unit volume represents -
A pressure of 106 dyne cm–2 is equivalent to-
If the units of M and L are increased three times, then the unit of energy will be increased by
If the units of mass, length and time are doubled, then the unit of force is-
