Q&A - Ask Doubts and Get Answers

Clear All

View All Answers (7)

R Roopasree

by connecting high resisrtance in series combination

 

Current density is a vector quantity

View All Answers (1)

A Avinash Dongre
Let   be an additional periodic force apart from the restoring force and the damping force,   then Amplitude in forced oscillation given by                     Where     is called a natural angular frequency. and   is the angular frequency of the driving force.    

View All Answers (1)

A Avinash Dongre
The general equation of angular SHM is given by  Similarly, The angular velocity if the bob which is in angular SHM is given by 

View All Answers (1)

A Avinash Dongre
It is called the "zeroth" law because it came to light after the first and second laws of thermodynamics had already been established and named, but was considered more fundamental and thus was given a lower number , i.e zero.

View All Answers (1)

A Avinash Dongre
Yes. The ratio of two extensive properties of the same object or system is an intensive property. For example, the ratio of an object's mass and volume is called density, And density is an intensive property. But both object's mass and volume are extensive properties.

View All Answers (1)

A Avinash Dongre
Open system - an open cup of coffee,  closed system-a cup of coffee with a lid on it
Electricity is a general word used to explain phenomena caused due to charge under rest or motion. In electrostatic we study about charge under rest and in current electricity we study about the flow of electric charge through a region.

View All Answers (1)

S Shubham Krishnan
Assumption taken is that the mass of each molecule and diameter of each molecule is constant. Then only condition of hyperbola is satisfied.

View All Answers (3)

R Rakesh Raki

Solid is more denser than liquid 

View All Answers (1)

A Avinash Dongre
Rate of Loss of Heat=    Rate of Cooling=        According to Newton's Law of Cooling  I.e              When body Cools by Radiation from    to theta  in time t                                                                                                                                       Then                                                                                                  ...

View All Answers (1)

A Avinash Dongre
If an ordinary body at temperature  is surrounded by a body at a temperature                       Then according to Stefan Boltzmann law                                 

View All Answers (1)

A Avinash Dongre
Wien's displacement law is useful for determining the temperatures of hot radiant objects such as stars, and it is also useful for a determination of the temperature of any radiant object whose temperature is far above that of its surroundings.

View All Answers (1)

A Avinash Dongre
   According to  Kirchhoff's law, the ratio of emissive power to absorptive power is the same for all surfaces at the same temperature and is equal to the emissive power of a perfectly black body at that temperature.  I.e   And as for perfectly black body A = 1

View All Answers (1)

A Avinash Dongre
No. Let's understand this in this concept.

View All Answers (1)

A Avinash Dongre
Here are some examples of different types of radiation: ultraviolet light from the sun visible light from a candle  
Exams
Articles
Questions