One second is equal to :

(1) 1650763.73 time periods of Kr clock

(2) 652189.63 time periods of Kr clock

(3) 1650763.73 time periods of Cs clock

(4) 9192631770 time periods of Cs clock

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One nanometre is equal to 

(1) 109mm

(2) 106cm

(3) 107cm

(4) 109cm

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A micron is related to centimetre as

(1) 1micron=108cm

(2) 1micron=106cm

(3) 1micron=105cm

(4) 1micron=104cm

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The unit of power is :

(1) Joule

(2) Joule per second only

(3) Joule per second and watt both

(4) Only watt

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A suitable unit for gravitational constant is 

(1) kg- msec1

(2) Nm1sec

(3) N  m2kg2

(4) kgmsec1

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SI unit of pressure is

(1) Pascal

(2) Dynes/cm2

(3) cm of Hg

(4) Atmosphere

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The unit of angular acceleration in the SI system is 

(1) Nkg1

(2) ms2

(3) rads2

(4) mkg1K

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The unit of Stefan's constant σ is :                                                  [Only for Droppers]

(1) Wm2K1

(2) Wm2K4

(3) Wm2K4

(4) Wm2K4

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Which of the following is not a unit of energy 

(1) W​-s

(2) kg-m/sec

(3) N​-m

(4) Joule

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In S=a+bt+ct2. S is measured in metres and t in seconds. The unit of c is 

(1) None

(2) m

(3) ms-1

(4) ms-2

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