# Joule-second is the unit of : (1) Work (2) Momentum (3) Pressure (4) Angular momentum

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From NCERT
PMT - 1990
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Unit of energy in SI system is

(1) Erg

(2) Calorie

(3) Joule

(4) Electron volt

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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

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63%
From NCERT
PMT - 1971
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Wavelength of ray of light is $0.00006\text{\hspace{0.17em}}m$. It is equal to

(1) $6\text{\hspace{0.17em}\hspace{0.17em}}microns$

(2) $60\text{\hspace{0.17em}\hspace{0.17em}}microns$

(3) $600\text{\hspace{0.17em}\hspace{0.17em}}microns$

(4) $0.6\text{\hspace{0.17em}\hspace{0.17em}}microns$

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55%
From NCERT
PMT - 1977
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Electron volt is a unit of

(1) Charge

(2) Potential difference

(3) Momentum

(4) Energy

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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
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72%
From NCERT
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Unit of power is:

(1) Kilowatt

(2) Kilowatt-hour

(3) Dyne

(4) Joule

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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

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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

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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 $\left(332\text{\hspace{0.17em}\hspace{0.17em}}m/\mathrm{sec}\right)$

(3) $1\text{\hspace{0.17em}\hspace{0.17em}}km/\mathrm{sec}$

(4) $1\text{\hspace{0.17em}}m/\mathrm{sec}$

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53%
From NCERT
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