units and measurements XI class

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1.The fundamental units

1 point

a) must depend on each other

b) Must not depend on each other

c) May depend on each other

d) None of these

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2.The fundamental units should have

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a) Invariable and availability

b) Invariability

c) Neither invariability nor availability

d) Availability

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4. The least count of a meter scale is 1mm. Which of the following length is measured by the meter scale?

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a) 2.1mm

b) 2.8cm

c) 2.801cm

d) 2.83cm

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5. Which system is a rational system of units

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a MKS

b CGS

c SI

d FPS

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6. The units for plane angle is radian (rad) and the unit for solid angle is steradian(sr) Choose correct statement for them

1 point

a) Plane angle depends on length and solid angle depends on area.

b) Plane angle is independent of length and solid angle depends on area.

c) radian is independent of length and steradian does not depend on area.

d) Both are CGS units

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