HSC Result Evaluation Training
Maharashtra state board has organized a training for all teachers on how…
Showing posts from August, 2022Show All
In a workshop a worker measures the length of a steel plate with a Vernier callipers having a least count 0.01 cm. Four such measurements of the length yielded the following values: 3.11 cm, 3.13 cm, 3.14 cm, 3.14 cm. Find the mean length, the mean absolute error and the percentage error in the measured value of the length.
Advantages of potentiometer over a voltmeter. Also state about its disadvantages
Advantages of potentiometer Accuracy of any potentiometer can be increased by increa…
Why cell phone doesn't works in a closed elevator
For a cell phone to work, it must be able to recieve electromagnetic signals. When a c…
Which property of soft iron makes it useful for preparing an electromagnet
An electromagnet should become magnetic when a current is passed through its coil, b…
What is retentitivty and coercivity
The residual magnetic flux density or magnetization in a magnetic material when the ma…
Postulates of Kinetic Theory of Gases
🍁 A gas consists of large number of tiny particles called molecules. Volu…
Doors of a dam are 20m below the surface of water in the dam. If one door is opened what will be the speed of the water that flows out of the door ?
The given can be listed as, h= 20m g = 9.8m/s² To find, v = ? Solution -��…