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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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 |
 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 |
 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 |
 81%
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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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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Unit of energy in SI system is 

1. Erg

2. Calorie

3. Joule

4. Electron volt

Subtopic:  Dimensions |
 80%
From NCERT
PMT - 1971
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A cube has a numerically equal volume and surface area. The volume of such a cube is :

1. 216 units

2. 1000 units

3. 2000 units

4. 3000 units

Subtopic:  Dimensions |
 63%
From NCERT
PMT - 1971
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