Unit & Dimension MCQ Level - 1 - Class 11 MCQ

Torque is the rotational analogue of which one of thefollowing linear motions :

The dimensions of  permittivity of free spaceand E = electric field) are :

The van der Waals' equation for a gas is :  

Where P,V,R,T and n represent the pressure, volume,universal gas constant, absolute temperature and thenumber of moles of a gas, respectively, 'a' and 'b' arethe constants. The ratio b/a will have the followingdimensional formula :

A gas bubble from an explosion under water oscillateswith a period proportional to P^ad^bE^c where P is the staticpressure, d is the density of water and E is the energyof explosion. Then a,b and c are :

The quantity X is given by where 0 e is thepermitivity of free space, L is a length, ΔV is a potentialdifference and Δt is a time interval. The dimensionalformula for X is same as that of :

Dimensions of  ,where symbols have their usualmeanings, are :

Which one of the following represents the correctdimensions of the coefficient of viscosity?

Planck's constant has the dimenstions of :

Dimensions of impulse are same as that of :

One micron is equal to :

If the units of mass, length and time are doubled, unit of angular momentum will be :

A new system of units is evolved in which the values ofμ₀ and e₀ are 2 and 8 respectively, The speed of light inthis system will be :

Which of the following is a derived unit?

Which of the following is a fundamental unit?

Which of the following is not a unit of length?

The S.I. unit of universal gas constant R is :

The dimensions of velocity gradient (Δu / Δz) are :

The dimensional formula for surface tension is :

An athletic's coach told him that muscle times speedequals power. What dimensions does he view formuscle?

The torque (t ) is given by :wwhere I = moment of inertia, ω =angular velocity thendimensions of B are :

The age of earth is of the order of :

With the usual notation, the following equation, said togive distance covered in nth second, i.e.,

If length of pendulum is increased by 2%. The time period will

The unit of power in S.I system is :

The dimensions of heat energy have :

Chandra shekhar Unit (CSI) is the unit of :

If units of length and force are increased 4 times, theunit of energy :