If an equilateral triangle, having vertex at the (2,-1), has a side along the line, x+y=2, then the area (in sq. units) of this triangle is :
If the sum of the first 15 terms of the series 3+7+14+24+37+.......is 15K, then k is equal to :
Statement 1: An equation of a common tangent to the parabola and the ellipse is
Statement 2: If the line is a common tangent to the parabola
and the ellipse then m satisfies
Statement 1 is false, statement 2 is true
Statement 1 is true, statement 2 is true; statement 2 is a correct explanation for statement 1
Statement 1 is true, statement 2 is true; statement 2 is not a correct explanation for statement 1
Statement 1 is true, statement 2 is false
The eccentricity of an ellipse whose centre is at the origin is
If one of its directrices is x=−4, then the equation of the normal to it at
The correct order of -I effect is
Let G be the geometric mean of two positive numbers a and b, and M be the arithmetic mean of and
if is 4:5 then a:b can be:
The sum of the first 20 terms common between the series 3+7+11+15+..... and 1+6+11+16+..... , is :
which interval probability lies.
The potential difference accross the terminals of a cell when it is not supplying any current is called e.m.f while
The voltage accross the terminals of a cell when it is supplying current to external resistance is known as Potential Difference .
When the cell is being charged
Strategy for simplifying a resistor network
@Nilesh When resistors are connected in series, the current through each resistor is the same and
the total potential difference across all the resistors is equal to the sum of the potential differences across each resistor.
For example when resistor are connected in sereis then
after increasing by 0.5%
So If both mass and radius are increased by 0.5% then and U remains unchanged where as g will be decreased.
the body is positively charged before grounding and after that electrons flows from earth to body and body becomes neutral.
the Body is positively charged before grounding because If a body is grounded and electrons starts flowing into the body from then Earth this would mean that the charges inside the body are attracting the negative electrons from Earth as a potential difference is being developed at the two ends, the Earth and the body.