Units and Measurement questions
875 published questions with worked solutions.
- Given potential difference V=(8 0.5) volt and current I=(2 0.2) A. The value of resistance R is
- The relative density of the material of a body is the ratio of its weight in air and the loss of its weight in water. By using a...
- One side of a cubical block is measured with the help of a vernier callipers of vernier constant 0.01 ,cm. This side comes out to...
- If the value of the resistance is 10.845 , and the value of the current is 3.23 A, then the potential difference is 35.02935 V....
- The percentage errors in the measurement of mass and speed are 2% and 3% respectively. How much will be the maximum error in the...
- The radius of the sphere is (4.3 0.1) ,cm. The percentage error in its volume is
- The initial temperature of a liquid is (80.0 0.1)°C. After it has been cooled, its temperature is (10.0 0.1)°C. The fall in...
- If there is a positive error of 50% in the measurement of speed of a body, then the error in the measurement of kinetic energy is
- The radius of a wire is 0.24 ,mm. Then its area of cross section, by taking significant figures into consideration, is
- Given =3.14. The value of ^2 with due regard for significant figures is
- The length, breadth and thickness of a block are measured to be 50 ,cm, 2.0 ,cm and 1.00 ,cm. The percentage error in the...
- The velocity of a transverse wave in a string is v= T/m , where T is the tension in the string and m is mass per unit length. If...
- Size of the observable universe is of the order of
- A rectangular beam which is supported at its two ends and loaded in the middle with weight w sags by an amount such that = wl^3...
- The SI unit of length is the metre. Suppose we adopt a new unit of length which equals x metre. The area of 1 ,m^2 expressed in...
- Statement 1: Pressure has the dimensions of energy density. Statement 2: Energy density = energy volume = [ML^2T^ -2 ] [L^3]...
- Which of the following combinations have the dimensions of time? L, C, R represent inductance, capacitance and resistance...
- In a new system of units, unit of mass is 10 kg, unit of length is 1 km and unit of time is 1 min. The value of 1 joule in this...
- A resistor of 10 ,k having tolerance 10% is connected in series with another resistor of 20 ,k having tolerance 20%. The...
- The dimensional formula of coefficient of permittivity for free space ( _0) in the equation F= 1 4 _0 q_1q_2 r^2 , where symbols...
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