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

Subtopic:  Dimensions |
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One nanometre is equal to:

(1) 109mm

(2) 106cm

(3) 107cm

(4) 109cm

Subtopic:  Dimensions |
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A micron is related to centimetre as

(1) 1micron=108cm

(2) 1micron=106cm

(3) 1micron=105cm

(4) 1micron=104cm

Subtopic:  Dimensions |
From NCERT
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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

Subtopic:  Dimensions |
 65%
From NCERT
PMT - 1985
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A suitable unit for gravitational constant is:

(1) kg- msec1

(2) Nm1sec

(3) N  m2kg2

(4) kgmsec1

Subtopic:  Dimensions |
 76%
From NCERT
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SI unit of pressure is

(1) Pascal

(2) Dynes/cm2

(3) cm of Hg

(4) Atmosphere

Subtopic:  Dimensions |
 80%
From NCERT
PMT - 1984
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The unit of angular acceleration in the SI system is 

(1) Nkg1

(2) ms2

(3) rads2

(4) mkg1K

Subtopic:  Dimensions |
 70%
From NCERT
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The unit of Stefan's constant σ is : [This question includes concepts from Thermal Properties of Matter chapter]

(1) Wm2K1

(2) Wm2K4

(3) Wm2K4

(4) Wm2K4

Subtopic:  Dimensions |
 57%
From NCERT
PMT - 1992
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In \(S= a+bt+ct^2,~S\) is measured in metres and \(t\) in seconds. The unit of \(c\) will be:

1. none 2. \(\text{m}\)
3. \(\text{ms}^{-1}\) 4. \(\text{ms}^{-2}\)
Subtopic:  Dimensions |
 75%
From NCERT
PMT - 1993
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Joule-second is the unit of :

(1) Work

(2) Momentum

(3) Pressure

(4) Angular momentum

Subtopic:  Dimensions |
From NCERT
PMT - 1990
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