Which relation is wrong?

(1) 1 Calorie = 4.18 Joules

(2) 1 Å=1010m

(3) 1  MeV=1.6×1013Joules

(4) 1Newton=105Dynes

Subtopic:  Dimensions |
 53%
From NCERT
PMT - 1997
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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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Given the equation \(\left(P+\frac{a}{V^2}\right)(V-b)=\text {constant}\). The units of \(a\) will be: (where \(P\) is pressure and \(V\) is volume)
1. \(\text{dyne} \times \text{cm}^5\)
2. \(\text{dyne} \times \text{cm}^4\)
3. \(\text{dyne} / \text{cm}^3\)
4. \(\text{dyne} / \text{cm}^2\)

Subtopic:  Dimensions |
 60%
From NCERT
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Which of the following quantity is expressed as force per unit area

(1) Work

(2) Pressure

(3) Volume

(4) Area

Subtopic:  Dimensions |
 89%
From NCERT
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Match the following:

List-I

List-II

(a)

Distance between earth and stars

1.

Microns

(b)

Inter-atomic distance in a solid

2.

Angstroms

(c)

Size of the nucleus

3.

Light years

(d)

Wavelength of infrared laser

4.

Fermi

 

 

5.

Kilometres

Codes:

 

a

b

c

d

(1)

5

4

2

1

(2)

3

2

4

1

(3)

5

2

4

3

(4)

3

4

1

2

Subtopic:  Dimensions |
 67%
From NCERT
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Which is not a unit of electric field

(1) NC1

(2) Vm1

(3) JC1

(4) JC1m1

Subtopic:  Dimensions |
 53%
From NCERT
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'Torr' is the unit of

(1) Pressure

(2) Volume

(3) Density

(4) Flux

Subtopic:  Dimensions |
 74%
From NCERT
PMT - 1999
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Which of the following is a derived unit

(1) Unit of mass

(2) Unit of length

(3) Unit of time

(4) Unit of volume

Subtopic:  Dimensions |
 87%
From NCERT
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Dyne/cm2 is not a unit of :

(1) Pressure

(2) Stress

(3) Strain

(4) Young's modulus

 

Subtopic:  Dimensions |
 62%
From NCERT
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The units of angular momentum are

(1) kgm2/s2

(2) Joules

(3) Joule/s

(4) kgms2

Subtopic:  Dimensions |
From NCERT
PMT - 2000
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