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What is meant by figure of merit of a ga...

What is meant by figure of merit of a galvanometer?

A

`k=(n.C)/(AB)`

B

`l=(C)/(nAB)phi`

C

`k=(C)/(nAB)`

D

`k=(phi)/(l)`

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The correct Answer is:
C
Deflecting torque=Torsional torque
`impliesnlAB=Cphi`
or `l=(C)/(nAB)phi`
`impliesl=kphi`
k is a contant `(=(C)/(nAB))` called figure of merit of galvanometer.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 05-Paper 1 (Physics & Chemistry)
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  2. What is meant by figure of merit of a galvanometer?

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  3. A radioactive nucleus of mass M emits a photon of frequency v and the ...

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  4. Magnetic transition temperature is also known as

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  5. 220 V AC means rms voltage and voltage amplitude have the values

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  6. Susceptance and admittance are respectively the reciprocals of

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  7. Dimensional formula of magnetic field is :-

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  8. A thin disc of mass 9M and radius R from which a disc of radius R/3 is...

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  9. The activity of a radioactive sample is measures as N0 counts per minu...

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  10. A student has measured the length of a wire equal to 0.04580 m. this v...

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  11. In the given circuit, the current through the resistor 4kOmega is

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  12. A TV transmission tower has a height of 160 m. its coverage range is

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  13. The amplitude of a executing SHM is 4cm At the mean position the speed...

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  14. A car is moving on a circular track of radius 0.1 km with a speed 60 k...

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  15. Acceleration due to gravity at a depth equal to half the radius of ear...

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  16. Weight of a body at the centre of the earth is zero because

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  17. Theorem of parallel axes is applicable for

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  18. Very thin ring of radius R is rotated about its centre. Its radius wil...

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  19. If for a particle executing SHM, the equation of SHM is given as y=aco...

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  20. The work done in splitting a drop of water of 1 mm radius into 10^(6) ...

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