Units and Measurement questions
875 published questions with worked solutions.
- The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the...
- The velocity v (in cm/sec) of a particle is given in terms of time t (in sec) by the relation v=at+ b t+c ; the dimensions of a,b...
- The equation of state of some gases can be expressed as (P+ a V^2 )= R V . Here P is the pressure, V the volume, the absolute...
- The length, breadth and thickness of a block are given by l=12 ,cm, b=6 ,cm and t=2.45 ,cm. The volume of the block according to...
- The dimensions of a b in the equation P= a-t^2 bx , where P is pressure, x is distance and t is time, are
- E,m,I and G denote energy, mass, angular momentum and the gravitational constant respectively, then the dimensions of EI^2 m^5G^2...
- If the radius of a sphere is (5.3 0.1) ,cm, then the percentage error in its volume will be **[Pb. PET 2000]**
- From the dimensional consideration, which of the following equations is correct? **[CPMT 1983]**
- The SI unit of universal gas constant (R) is **[CPMT 1984, MP Board 1987, MP PMT 1988, JIPMER 1987, AFMC 1994, UPSEAT 1993]**
- The e.m.f. E of a certain thermocouple depends on the temperature difference between its two junctions in accordance with the...
- If the density of wood in the C.G.S. system is 0.5, then the corresponding value in the M.K.S. system is ________.
- The order of magnitude of the number of seconds in a leap year is 10^b. Find the value of b.
- In an experiment, the diameter of a capillary is D=1.50 10^ -2 ,m and the rise of water in it is h=3.00 10^ -2 ,m. Using g=9.80...
- Three measurements are made as 28.426 ,cm, 7.20 ,cm and 5.2 ,cm. The sum of the measurements up to the correct number of...
- The radius of a uniform wire is r=0.21 ,cm. The value of is given to be 22/7. What is the area of cross section (in cm^2) of the...
- If the dimension of impulse is [M^ 2b L^ 3a T^ 4c ], then the value of 3a+2b-4c will be ________.
- If dx 8ax-x^2 =a^m ^ -1 ( x-4a 4a ), where x and a represent distance, then the value of m using dimensional analysis is ________.
- A spherometer has 50 equal divisions marked along the circumference of its disc, and five full rotations of the disc advance it...
- Energy (E) is expressed in terms of mass (m), distance (x) and time (t) as E=ax+ t^2 b m . If the dimensions of b/a is...
- Coefficient of thermal conductivity is the product of heat, distance and the reciprocal of (area time). The new value of the unit...
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