Most Popular Questions & Answers For CBSE Class 11 Physics

f = a√x + bt², where [f] = [M L T ⁻²], [x] = [L] and [t] = [T].

LHS is force. So both the terms on the RHS have the dimensions of force.

[f] = [a&...

Answer (1)

Class-XI

Physics

Units and Measurement

Neemit bagh

Jul 16, 2014

Write the dimensions of a and b in the relation E=b-x²/at, where E,x and t represent energy,distance and time respectively.

According to the principle of homogeneity of dimensions, [E] = [b] = [(x²/a) t]

[E] = [M L² T⁻²]
Therefore [b] = [M L² T⁻²

Answer (1)

Class-XI

Physics

Units and Measurement

Neemit bagh

Jul 12, 2014

Write the dimensional formula of a/b in the relation P=a-t²/bx where p=pressure,x=distance,t=time.

[ M T^2 ]

Answer (2)

Class-XI

Physics

Units and Measurement

Zeba

Jun 2, 2015

which quantity has unit but no dimension?

Angle and solid angle are the physical quantities which have no dimensional formula as they are the ratios of the same physical quantity, but we measure them.

Angle is measured in radians, gradia...

Answer (1)

Class-XI

Physics

Units and Measurement

Avinash Pratap singh

Aug 3, 2014

How to derive dimensions of Solar constant ?

The solar constant is defined as the solar energy incident per unit area per second on...

Answer (1)

Class-XI

Physics

Units and Measurement

Neemit bagh

Jul 16, 2014

The escape velocity v of a body depends upon (i) the acceleration due to gravity of the planet and (ii)the radius of the planet R.Establish dimensionally the relationship v,g and R.

v = k g^a R^b
k is a dimensionless constant.
[v] = [ g^a R^b ]
[L T ⁻¹] = [(LT ⁻²)^a L^b]
...

Answer (1)

Class-XI

Physics

Units and Measurement

Shobhit Gupta

May 18, 2014

accuracy in the determination of g

In this answer from where has T=t/n and ΔT=Δt/n came?

Answer:
Total time taken for n oscillation (T) = number of os...

Answer (1)

Class-XI

Physics

Units and Measurement

Neemit bagh

Jul 12, 2014

Find the dimensions of constant a and b occurig in van der Waal's equation . [p+a/v²][v-b]=RT

Answer.

(P + a/V²) (V - b) = RT
P is pressure, V is volume and T is temperature.
[P] = [F/A]&#...

Answer (2)

Class-XI

Physics

Units and Measurement

Avinash Pratap singh

Apr 25, 2014

How to calculate angels beteween star and earth ? angle α ?

This answer has an image. Please click on the question to read more.

Answer (2)

Class-XI

Physics

Units and Measurement

Sonali Sahi

Apr 17, 2015

What is parallax method? and Error?

Ans:

Paral...

Answer (5)

Class-XI

Physics

Units and Measurement

Neemit bagh

Jul 12, 2014

Write the dimensional formula of a/b in the relation f=a√x+bt² where f=force,x=distance,t=time.

f = a√x + bt², where [f] = [M L T ⁻²], [x] = [L] and [t] = [T].

LHS is force. So both the terms on the RHS have the dimensions of force.

[f] = [a&...

Answer (1)

Class-XI

Physics

Units and Measurement

Neemit bagh

Jul 16, 2014

Write the dimensions of a and b in the relation E=b-x²/at, where E,x and t represent energy,distance and time respectively.

According to the principle of homogeneity of dimensions, [E] = [b] = [(x²/a) t]

[E] = [M L² T⁻²]
Therefore [b] = [M L² T⁻²

Answer (1)

Class-XI

Physics

Units and Measurement

Neemit bagh

Jul 12, 2014

Write the dimensional formula of a/b in the relation P=a-t²/bx where p=pressure,x=distance,t=time.

[ M T^2 ]

Answer (2)

Class-XI

Physics

Units and Measurement

Zeba

Jun 2, 2015

which quantity has unit but no dimension?

Angle and solid angle are the physical quantities which have no dimensional formula as they are the ratios of the same physical quantity, but we measure them.

Angle is measured in radians, gradia...

Answer (1)

Class-XI

Physics

Units and Measurement

Avinash Pratap singh

Aug 3, 2014

How to derive dimensions of Solar constant ?

The solar constant is defined as the solar energy incident per unit area per second on...

Answer (1)

Class-XI

Physics

Units and Measurement

Neemit bagh

Jul 16, 2014

The escape velocity v of a body depends upon (i) the acceleration due to gravity of the planet and (ii)the radius of the planet R.Establish dimensionally the relationship v,g and R.

v = k g^a R^b
k is a dimensionless constant.
[v] = [ g^a R^b ]
[L T ⁻¹] = [(LT ⁻²)^a L^b]
...

Answer (1)

Class-XI

Physics

Units and Measurement

Shobhit Gupta

May 18, 2014

accuracy in the determination of g

In this answer from where has T=t/n and ΔT=Δt/n came?

Answer:
Total time taken for n oscillation (T) = number of os...

Answer (1)

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Academic Questions & Answers Forum

Find the dimensions of constant a and b occurig in van der Waal's equation . [p+a/v²][v-b]=RT

How to calculate angels beteween star and earth ? angle α ?

What is parallax method? and Error?

Write the dimensional formula of a/b in the relation f=a√x+bt² where f=force,x=distance,t=time.

Write the dimensions of a and b in the relation E=b-x²/at, where E,x and t represent energy,distance and time respectively.

Write the dimensional formula of a/b in the relation P=a-t²/bx where p=pressure,x=distance,t=time.

which quantity has unit but no dimension?

How to derive dimensions of Solar constant ?

The escape velocity v of a body depends upon (i) the acceleration due to gravity of the planet and (ii)the radius of the planet R.Establish dimensionally the relationship v,g and R.

accuracy in the determination of g

Find the dimensions of constant a and b occurig in van der Waal's equation . [p+a/v²][v-b]=RT

How to calculate angels beteween star and earth ? angle α ?

What is parallax method? and Error?

Write the dimensional formula of a/b in the relation f=a√x+bt² where f=force,x=distance,t=time.

Write the dimensions of a and b in the relation E=b-x²/at, where E,x and t represent energy,distance and time respectively.

Write the dimensional formula of a/b in the relation P=a-t²/bx where p=pressure,x=distance,t=time.

which quantity has unit but no dimension?

How to derive dimensions of Solar constant ?

The escape velocity v of a body depends upon (i) the acceleration due to gravity of the planet and (ii)the radius of the planet R.Establish dimensionally the relationship v,g and R.

accuracy in the determination of g

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Academic Questions & Answers Forum

Find the dimensions of constant a and b occurig in van der Waal's equation . [p+a/v2][v-b]=RT

How to calculate angels beteween star and earth ? angle α ?

What is parallax method? and Error?

Write the dimensional formula of a/b in the relation f=a√x+bt2 where f=force,x=distance,t=time.

Write the dimensions of a and b in the relation E=b-x2/at, where E,x and t represent energy,distance and time respectively.

Write the dimensional formula of a/b in the relation P=a-t2/bx where p=pressure,x=distance,t=time.

which quantity has unit but no dimension?

How to derive dimensions of Solar constant ?

The escape velocity v of a body depends upon (i) the acceleration due to gravity of the planet and (ii)the radius of the planet R.Establish dimensionally the relationship v,g and R.

accuracy in the determination of g

Find the dimensions of constant a and b occurig in van der Waal's equation . [p+a/v2][v-b]=RT

How to calculate angels beteween star and earth ? angle α ?

What is parallax method? and Error?

Write the dimensional formula of a/b in the relation f=a√x+bt2 where f=force,x=distance,t=time.

Write the dimensions of a and b in the relation E=b-x2/at, where E,x and t represent energy,distance and time respectively.

Write the dimensional formula of a/b in the relation P=a-t2/bx where p=pressure,x=distance,t=time.

which quantity has unit but no dimension?

How to derive dimensions of Solar constant ?

The escape velocity v of a body depends upon (i) the acceleration due to gravity of the planet and (ii)the radius of the planet R.Establish dimensionally the relationship v,g and R.

accuracy in the determination of g

Find the dimensions of constant a and b occurig in van der Waal's equation . [p+a/v²][v-b]=RT

Write the dimensional formula of a/b in the relation f=a√x+bt² where f=force,x=distance,t=time.

Write the dimensions of a and b in the relation E=b-x²/at, where E,x and t represent energy,distance and time respectively.

Write the dimensional formula of a/b in the relation P=a-t²/bx where p=pressure,x=distance,t=time.

Find the dimensions of constant a and b occurig in van der Waal's equation . [p+a/v²][v-b]=RT

Write the dimensional formula of a/b in the relation f=a√x+bt² where f=force,x=distance,t=time.

Write the dimensions of a and b in the relation E=b-x²/at, where E,x and t represent energy,distance and time respectively.

Write the dimensional formula of a/b in the relation P=a-t²/bx where p=pressure,x=distance,t=time.