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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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 |
 61%
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 |
 55%
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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The velocity of a particle depends upon as v=a+bt+ct2; if the velocity is in m/sec, the unit of a will be 

(1) m/sec

(2) m/sec2

(3) m2/sec

(4) m/sec3

Subtopic:  Dimensions |
 75%
From NCERT
PMT - 1990
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If the unit of length and force be increased four times, then the unit of energy is 

1. Increased 4 times

2. Increased 8 times

3. Increased 16 times

4. Decreased 16 times

Subtopic:  Dimensions |
 67%
From NCERT
PMT - 2005
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The unit of specific resistance is 

(1) Ohm / cm2

(2) Ohm / cm

(3) Ohm - cm

(4) (Ohm - cm)-1

Subtopic:  Dimensions |
 53%
From NCERT
PMT - 1975
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If \(u_1\) and \(u_2\) are the units selected in two systems of measurement and \(n_1\) and \(n_2\) are their numerical values, then:

1. \(n_1u_1=n_2u_2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \)
2. \(n_1u_1+n_2u_2=0\)
3. \(n_1n_2=u_1u_2\)
4. \((n_1+u_1)=(n_2+u_2)\)
Subtopic:  Dimensions |
 85%
From NCERT
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If x=at+bt2, where x is the distance travelled by the body in kilometres while t is the time in seconds, then the units of b are

(1) km/s

(2) kms

(3) km/s2

(4) kms2

Subtopic:  Dimensions |
 83%
From NCERT
PMT - 1993
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