Home
Class 11
PHYSICS
A dimensionless quantity...

A dimensionless quantity

A

Never has unit

B

Always has a unit

C

May have a unit

D

Does not exist

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS

    ALLEN |Exercise Exercise-03|1 Videos

  • MISCELLANEOUS

    ALLEN |Exercise Exercise-04|1 Videos

  • MISCELLANEOUS

    ALLEN |Exercise Exersice -05(B)|20 Videos

  • KINEMATICS (MOTION ALONG A STRAIGHT LINE AND MOTION IN A PLANE)

    ALLEN |Exercise BEGINNER S BOX-7|8 Videos

  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN |Exercise EXERCISE-IV|7 Videos

Similar Questions

Explore conceptually related problems

A charged particle of charge e and mass m is moving in an electric field vecE and magnetic field vecB . Construct dimensionless quantities and quantities of dimension [T]^(-1) .

A, B, C and D are four different physical quantities having different dimensions. None of them is dimensionless. But we know that the equation AD= C 1n(BD) holds true. Then which of the combination is not a meaningful quantity :-

Which of the following is unitless quantity?

The unit less quantity is

Which of the following is unitless quantity?

If P, Q, R are physical quantities, having different dimensions, which of the following combinations can never be a meaningful quantity ?

Give responsible quantity for gravitational force.

Assertion : All derived quantities may be represented dimensionally in terms of the base quantities. Reason : The dimensions of a base quantity in other base quantities are always zero.

Dimension of derived quantity obtained by using fundamental quantity is always nonzero.

ALLEN -MISCELLANEOUS-Exercise-02
  1. The units of three physical quantities x, y an z are gcm^(2)s^(-2),gs^...

    Text Solution

    |

  2. If the unit of length be doubled then the numercial value of the unive...

    Text Solution

    |

  3. A dimensionless quantity

    Text Solution

    |

  4. The Bernoull's equation is given by P+(1)/(2)pv^(2)+hpg=k Where P=...

    Text Solution

    |

  5. When wave travells in medium, the displacement of a particle located a...

    Text Solution

    |

  6. The van der wasl's equation of a gas is (P+(aT^(2))/V) V^(c)=(RT+b). W...

    Text Solution

    |

  7. Two quantities A and B are related by A//B=m where m is linear mass de...

    Text Solution

    |

  8. A physical quantity x can dimensionally represented in terms of M, L a...

    Text Solution

    |

  9. If the velocity of light c, gravitational constant G and Planck's cons...

    Text Solution

    |

  10. A calorie is a unit of heat energy and its value is 4.18J, where 1J=1k...

    Text Solution

    |

  11. Angle between the vectors vec(a)=-hat(i)+2hat(j)+hat(k) and vec(b)=xha...

    Text Solution

    |

  12. Three forces P,Q&R are acting at a point in a plane. The angle between...

    Text Solution

    |

  13. Let vec(a), vec(b), vec(c) be vectors of length 3, 4, 5 respectively. ...

    Text Solution

    |

  14. Let vec(a), vec(b), vec(c) are three unit vector such that vec(a)+vec(...

    Text Solution

    |

  15. If the sum of two unit vectors is a unit vector,then find the magnitud...

    Text Solution

    |

  16. X- component of vec(a) is twice of its Y- component. If the magnitude ...

    Text Solution

    |

  17. If vec(a) is a vector and x is a non-zero scalar, then

    Text Solution

    |

  18. The two vectors vec(A) and vec(B) are drawn from a common point and ve...

    Text Solution

    |

  19. Which of the following expressions are meaningful?

    Text Solution

    |

  20. If the vectors vec a , vec b ,a n d vec c form the sidesB C ,C Aa n d...

    Text Solution

    |