The Human Eye And The Colourful World
An ammeter has 20 divisions between 0 mark and 2 A mark on its scale. The least count of this ammeter is :
Connecting you to a tutor in 60 seconds.
Get answers to your doubts.
A student using the same two resistors, ammeter, voltmeter and battery, sets up two circuits A and B connecting the two resistors first in series and then in parallel. If the ammeter and voltmeter readings in the two cases be I1,I2 and V1,V2 respectively, he is likely to observe that :
Four students A, B, C and D performed the experiment to determine the focal length of a concave mirror by obtaining the image of a distant tree on a screen. They measured the distances between the screen and the mirror as shown in the diagrams given below : The correct value for focal length will be obtained by the student :