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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Wavelength of ray of light is 0.00006m. It is equal to 

(1) 6  microns

(2) 60  microns

(3) 600  microns

(4) 0.6  microns

Subtopic:  Dimensions |
 55%
From NCERT
PMT - 1977
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Electron volt is a unit of 

(1) Charge

(2) Potential difference

(3) Momentum

(4) Energy

Subtopic:  Dimensions |
From NCERT
PMT - 1993
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Temperature can be expressed as a derived quantity in terms of any of the following:

1. length and mass 2. mass and time
3. length, mass, and time 4. none of the above
Subtopic:  Dimensions |
 72%
From NCERT
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Unit of power is:

(1) Kilowatt

(2) Kilowatt-hour

(3) Dyne

(4) Joule

Subtopic:  Dimensions |
 55%
From NCERT
PMT - 1971
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The density of wood is 0.5gm/cc in the CGS system of units. The corresponding value in MKS units is :

(1) 500

(2) 5

(3) 0.5

(4) 5000

Subtopic:  Dimensions |
 60%
From NCERT
PMT - 1983
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Which is the correct unit for measuring nuclear radii

(1) Micron

(2) Millimetre

(3) Angstrom

(4) Fermi

Subtopic:  Dimensions |
 54%
From NCERT
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Mach number is equal to one when velocity of object is equal to:

(1) Velocity of light

(2) Velocity of sound (332  m/sec)

(3) 1  km/sec

(4) 1m/sec

Subtopic:  Dimensions |
 52%
From NCERT
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Volt/metre is the unit of 

(1) Potential

(2) Work

(3) Force

(4) Electric field intensity

Subtopic:  Dimensions |
 65%
From NCERT
PMT - 1984
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