The dimensional formula of the coefficient of thermal conductivity is :

1.  M1L1T-3K-1

2.  M3L-1T-3K

3.  M1L-3T-1K-1

4.  M1L1T-3K

Subtopic:  Dimensions |
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If L,Q,R represent inductance, charge and resistance respectively, the units of 

[This question includes concepts from 12th syllabus]

1. QRL will be those of current

2. Q2R3L2 will be those of energy

3. QLR will be those of current

4. Q3R2L will be those of power                   

Subtopic:  Dimensions |
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The quantity 120E2 has dimensional formula same as [This question includes concepts from 12th syllabus]

1. 12CV2

2. 12LI2

3. 12 B2μ0

4. Power

Subtopic:  Dimensions |
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A light-year is a unit of: 
1. Time
2. Mass
3. Distance
4. Energy

Subtopic:  Measurement & Measuring Devices |
 74%
From NCERT
PMT - 1989
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The magnitude of any physical quantity:

1. depends on the method of measurement.
2. does not depend on the method of measurement.
3. is more in the SI system than in the CGS system.
4. is directly proportional to the fundamental units of mass, length and time.

Subtopic:  Dimensions |
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Which of the following is not equal to a watt?
1. Joule/second
2. Ampere\(\times\) volt
3. (Ampere)2\(\times\) ohm
4. Ampere/volt

Subtopic:  Dimensions |
From NCERT
PMT - 1990
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Newton–second is the unit of  

(1) Velocity

(2) Angular momentum

(3) Momentum

(4) Energy

Subtopic:  Dimensions |
From NCERT
PMT - 1984
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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 |
 59%
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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 |
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One nanometre is equal to:

(1) 109mm

(2) 106cm

(3) 107cm

(4) 109cm

Subtopic:  Dimensions |
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