Friday 31 March 2017

CBSE Class 12 - Physics - Electrostatic Potential and Capacitance (Short Q and A) (#cbsenotes)

Electrostatic Potential and Capacitance 

CBSE Class 12 - Physics 
(Short Q and A)
CBSE Class 12 - Physics - Electrostatic Potential and Capacitance (Short Q and A) (#cbsenotes)


Q1: Define Electrostatic Potential.

Answer: The electrostatic potential at a point is defined as amount of work done per unit positive test charge in moving the test charge from infinity to that point against the electrostatic force due to the electric field.
Q4: Is electric potential a scalar quantity or vector quantity?


Q2: Name the physical quantity whose SI unit is Joule coulomb⁻ⁱ?

Answer:  Electric potential


Q3: Does the electric potential increase or decrease along the electric line of force?

Answer: It decreases along the electric line of force.


Q4: Is electric potential a scalar quantity or vector quantity?

Answer: Scalar quantity


Monday 27 March 2017

CBSE Class 9 - SA2 Mathematics Sample Question Paper (2016-17)(#cbsepapers)

CBSE Class 9 - SA2 Mathematics Sample Question Paper (2016-17)(#cbsepapers)

CBSE Class 9 - SA2 Mathematics Sample Question Paper (2016-17)





CBSE Class 9 - Mathematics - CH 14: Statistics - Important Points

Statistics - Important Points

CBSE Class 9 - Mathematics 
CBSE Class 9 - Mathematics - CH 14: Statistics - Important Points

In statistics we study collection, presentation analysis and interpretation of data.

Facts or figures collected with a definite purpose are called data.

Data are fundamental. Statistical tests are performed on raw not manipulated data.

The number of times an observation occurs in the given data is called frequency of the observation.

Class intervals are the groups in which all observations are divided.