Vector Questions

The diameter of a cylinder is measured using a Vernier callipers with no zero error. It is found that the zero of the Vernier scale lies between 5.10 cm and 5.15 cm of the main scale. The Vernier scal...

In an experiment four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quantity P is calculated as follows % error in P is :-...

The velocity of a projectile at the initial point A is m/s. It′s velocity (in m/s) at point B is :-

The current voltage relation of diode is given by I = (e1000V/T- 1) mA, where the applied V is in volts and the temperature T is in degree kelvin. If astudent makes an error measuring ± 0.01 V wh...

A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it?

If force (F), velocity (V) and time (T) are taken as fundamental units, then the dimensions of mass are

If the magnitude of sum of two vectors is equal to the magnitude of difference of the two vectors, the angle between these vectors is:

Unpolarised light is incident from air on a plane surface of a material of refractive index 'μ'. At a particular angle of incidence 'i', it is found that the reflected and refracted...

Let [∈0] denote the dimensional formula of the permittivity of vacuum. If M = mass, L = Length, T = Time and A = electric current, then :...

A spectrometer gives the following readingwhen used to measure the angle of a prism.Main scale reading : 58.5 degreeVernier scale reading : 09 divisionsGiven that 1 division on main scalecorresponds t...

Resistance of a given wire is obtained bymeasuring the current flowing in it and thevoltage difference applied across it. If thepercentage errors in the measurement of thecurrent and the voltage diffe...

The density of a solid ball is to be determined in an experiment. The diameter of the ball is measured with a screw gauge, whose pitch is 0.5 mm and there are 50 divisions on the circular scale. The r...

The dimensions of (μoεo) -1/2 are

If voltage across a bulb rated 220 Volt-100 Watt drops by 2.5% of its rated value, the percentage of the rated value by which the power would decrease is divisions of the main scale....

Match List I with List II and select the correct answer using the codes given below the lists :...

The density of a material in CGS system of unit is 4 g cm-3 . In a system of unit in whichunit of length is 10 cm and unit of mass is 100 g, the value of density of material will be...

The dimensions of (μ0ε0)-1/2 are

A screw gauge gives the following reading when used to measure the diameter of a wire. Main scale reading : 0 mm.Circular scale reading : 52 divisions. Given that 1 mm on main scalecorresponds to 100 ...

The respective number of significant figures for the numbers 23.023, 0.0003 and 2.1 × 10-3 are

A Vernier calipers has 1 mm marks on the main scale. It has 20 equal divisions on the Vernier scale which match with 16 main scale divisions. For this Vernier calipers, the least count is...