The pair(s) of physical quantities that do not have the same dimensions, is (are) 

1. Reynolds number and coefficient of friction

2. Latent heat and gravitational potential

3. Curie and frequency of a light wave

4. Planck's constant and torque

The speed of light (c), gravitational constant (G) and Planck's constant (h) are taken as the fundamental units in a system. The dimension of time in this new system should be 

1. $G^{1/2}{h}^{1/2}{c}^{-5/2}$

2. $G^{-1/2}{h}^{1/2}{c}^{1/2}$

3. $G^{1/2}{h}^{1/2}{c}^{-3/2}$

4. $G^{1/2}{h}^{1/2}{c}^{1/2}$

If the constant of gravitation (G), Planck's constant (h) and the velocity of light (c) be chosen as fundamental units. The dimension of the radius of gyration is 

1. $h^{1/2}{c}^{-3/2}{G}^{1/2}$

2. $h^{1/2}{c}^{3/2}{G}^{1/2}$

3. $h^{1/2}{c}^{-3/2}{G}^{-1/2}$

4. $h^{-1/2}{c}^{-3/2}{G}^{1/2}$

X = 3YZ² find dimension of Y in (MKSA) system, if X and Z are the dimension of capacity and magnetic field respectively

1. $M^{-3}{L}^{-2}{T}^{-4}{A}^{-1}$

2. ML^–2

3. $M^{-3}{L}^{-2}{T}^4{A}^4$

4. $M^{-3}{L}^{-2}{T}^8{A}^4$

In the relation $P=\frac{\alpha }{\beta }{e}^{-\frac{\alpha Z}{k\theta }}$, P is pressure, Z is the distance, k is the Boltzmann constant and θ is the temperature. The dimensional formula of β will be:

1. $\left[M^0{L}^2{T}^0\right]$

2. $\left[M^1{L}^2{T}^1\right]$

3. $\left[M^1{L}^0{T}^{-1}\right]$

4. $\left[M^0{L}^2{T}^{-1}\right]$

The frequency of vibration of string is given by $\nu =\frac{p}{2l}{\left[\frac{F}{m}\right]}^{1/2}$. Here p is number of segments in the string and l is the length. The dimensional formula for m will be

1. $\left[M^{0}L{T}^{-1}\right]$

2. $\left[M{L}^0{T}^{-1}\right]$

3. $\left[M{L}^{-1}{T}^0\right]$

4. $\left[M^0{L}^0{T}^0\right]$

Choose the correct match 

1. (i) G, (ii) H, (iii) I, (iv) B, (v) C

2. (i) D, (ii) H, (iii) I, (iv) B, (v) G

3. (i) G, (ii) H, (iii) I, (iv) B, (v) G

4. None of the above

A wire has a mass of \((0.3\pm0.003)\) grams, a radius of \((0.5\pm 0.005)\) mm, and a length of \((0.6\pm0.006)\) cm. The maximum percentage error in the measurement of its density will be:
1. \(1\)
2. \(2\)
3. \(3\)
4. \(4\)

If \(97.52\) is divided by \(2.54\), the correct result in terms of significant figures is:

Assertion : ‘Light year’ and ‘Wavelength’ both measure distance.

Reason : Both have dimensions of time.