While measuring length of small iron rod, following five reading wee obtained.
`12.66 mm, 12.58 mm, 12.62 mm, 12.80 mm and 12.72mm`
The experimenter reported the result of the experiment based on the obove readings.

While measuring length of small iron rod, following five reading were obtained. 12.66 mm, 12.58 mm, 12.62 mm, 12.80 mm and 12.72mm The experimeter reported the result of the experiment based on the above readings.

The thickness of a glass sheet is measured at six different places and the following readings are obtained : 1.21 mm, 1.24 mm, 1.19 mm, 1.15 mm, 1.22 mm, 1.25 mm. Find the most probable value of the thickness and percentage error in measurement.

A student measuring the diameter of a pencil of circular cross-section with the help of a vernier scale records the following four reading 5.50 mm, 5.55 mm, 5.45 mm , is 5.5375 mm and the standard deviation of the date is 0.07395 mm. The average diameter of the pencil should therefore be recorded as :

A student measuring the diameter of a pencil of circular cross-section with the help of a vernier scale records the following four readings 5.50 mm, 5.55 mm, 5.45 mm and 5.65 mm. The average of these four readings is 5.5375 mm and the standard deviation of the data is 0.07395 mm. The average diameter of the pencil should therefore be recorded as :

In the following arrangement y = 1.0 mm , d = 0.24 mm and D = 1.2 m . The work function of the material of the emitter is 2.2 eV . The stopping potential V needed to stop the photo current will be

In the following arrangement y = 1.0 mm , d = 0.24 mm and D = 1.2 m . The work function of the material of the emitter is 2.2 eV . The stopping potential V needed to stop the photo current will be

In the following arrangement y = 1.0 mm , d = 0.24 mm and D = 1.2 m . The work function of the material of the emitter is 2.2 eV . The stopping potential V needed to stop the photo current will be

A combined double screw gauge as shown in the figure is used as If the readings on the two scales with the tips of the screws touching each other are 2.97 mm and 6.04 mm when a rod is held between the screws readings are 12.55 mm and 5.96 mm what is the diameter of the ord ?

The main scale of a vernier calliper reads in mm and its vernier scale is divided into 8 divisions, which coincides with 7 divisions of the main scale. It was also observed that, when the two jaws are brought in contact, the zero of the vernier scale coincided with the zero of the main scale. The edge length of a cube is measured using this vernier calliper. The main scale reads 12 mm and 2^("nd") division of the vernier scale coincides with the main scale. The edge length (in mm) of the cube is