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Class 10
Physics
Optics
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 :
(a)
0.01A
(b)
0.02 A
(c)
0.1 A
(d)
0.2 A
Correct answer:
(c)
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Similar topics
wave optics
optics and optical instruments
the human eye and the colourful world
optics
geometrical optics
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View Similar topics ->
wave optics
optics and optical instruments
the human eye and the colourful world
optics
geometrical optics
View All ↓
An ammeter has 20 divisions between 0 mark and 2 A mark on its scale. The least count of this ammeter is :
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 :
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
I
1
,
I
2
and
V
1
,
V
2
respectively, he is likely to observe that :
An ammeter has 20 divisions between 0 mark and 2 A mark on its scale. The least count of this ammeter is :
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 :
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
I
1
,
I
2
and
V
1
,
V
2
respectively, he is likely to observe that :
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