Which of the following is not represented in correct unit  

(1) StressStrain=N/m2

(2) Surface tension = N/m

(3) Energy =kg​-​m/sec

(4) Pressure =N/m2

Subtopic:  Dimensions |
 60%
From NCERT
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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 |
From NCERT
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One nanometre is equal to:

(1) 109mm

(2) 106cm

(3) 107cm

(4) 109cm

Subtopic:  Dimensions |
From NCERT
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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 |
 50%
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 |
 66%
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 |
 77%
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 |
 72%
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+ct2S is measured in metres and t in seconds. The unit of c will be:

1. none 2. m
3. ms-1 4. ms-2
Subtopic:  Dimensions |
 74%
From NCERT
PMT - 1993
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