When does the current flow through the following circuit

A car is moving along x-axis with a velocity v=20 m/s. it sounds a whistle of frequency 660 Hz. If the speed of sound is 340 m/s, the apparent frequency heard by the observer O (shown in the figure) is

Two closed organ pipe A and pipe B have the same length. A is wider than B. they resonate in the fundamental mode at frequencies respectively, then

The locus of the point (a cos³ q, a sin³ q) is

In this question, we have to find the correct option, where we are given with Locus point. The locus of points is defined as the set of points that satisfy certain properties. A locus is a set of points, in geometry, which satisfies a given condition or situation for a shape or a figure.

The are of the triangle inscribed in the parabola y² = 4x, the ordinates of whose vertices are 1, 2 and 4 is

The line x + my + n = 0 will be a tangent to the parabola y² = 4ax if

Origin of heart beat and its conduction is represented by

The blood leaving the lungs is richer than the blood entering the lung in–

If lx + my + n = 0 is a tangent to the parabola x² = y, then condition of tangency is

For all x Î (0, 1)

A (1, 2) B (-1, 2) are two fixed points. The locus of P such that PA = n. PB, where n ¹ 1 is a constant, is1

x2 + y2 + 2gx + 2fy + c = 0 is the general equation of a circle.

In mammals, the scent glands may be modified.

Folder upper part of dermis is known as

A flag staff stands vertically on a pillar The height of the flag staff being double the height of the pillar Aman on the ground at a distance finds both pillar and the flag staff subtends equal angle at his eye then

Assertion A : The radius of the circle inscribed in the triangle obtained by joining the middle points of the sides of ABC is equal to half the radius of incircle of ABC.
Reasons R : In ABC, D, E, F be midpoints of the sides of ABC, ',2s' denote area and perimeter of ΔDEF then ' =  / 4 and s' = s / 2

Let ABC be a triangle such the ,then equal to