Maths-
General
Easy
Question
Statement- (1) : Let () and () are the ends of a focal chord of = 4x then
Statement- (2) : PSQ is the focal of a parabola with focus S and latus rectum then SP + SQ = 2.
- Both S1 & S2 are correct & S2 is correct explanation of S1
- Both S1 & S2 are correct but S2 is not correct explanation of S1
- S1 is correct S2 is wrong
- S1 is wrong S2 is correct
The correct answer is: S1 is correct S2 is wrong
Related Questions to study
maths-
Statement- (1) : If 4 & 3 are length of two focal segments of focal chord of parabola y2 = 4ax than latus rectum of parabola will be 48/7 units
Statement- (2) : If 1 & 2 are length of focal segments of focal chord than its latus rectum is .
Statement- (1) : If 4 & 3 are length of two focal segments of focal chord of parabola y2 = 4ax than latus rectum of parabola will be 48/7 units
Statement- (2) : If 1 & 2 are length of focal segments of focal chord than its latus rectum is .
maths-General
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The current i in an inductance coil varies with time, t according to the graph shown in fig. Which one of the following plots shows the variation of voltage in the coil with time
The current i in an inductance coil varies with time, t according to the graph shown in fig. Which one of the following plots shows the variation of voltage in the coil with time
physics-General
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Figure (i) shows a conducting loop being pulled out of a magnetic field with a speed v. Which of the four plots shown in figure (ii) may represent the power delivered by the pulling agent as a function of the speed v
Figure (i) shows a conducting loop being pulled out of a magnetic field with a speed v. Which of the four plots shown in figure (ii) may represent the power delivered by the pulling agent as a function of the speed v
physics-General
physics-
The graph gives the magnitude B(t) of a uniform magnetic field that exists throughout a conducting loop, perpendicular to the plane of the loop. Rank the five regions of the graph according to the magnitude of the emf induced in the loop, greatest first
The graph gives the magnitude B(t) of a uniform magnetic field that exists throughout a conducting loop, perpendicular to the plane of the loop. Rank the five regions of the graph according to the magnitude of the emf induced in the loop, greatest first
physics-General
physics-
Some magnetic flux is changed from a coil of resistance 10 ohm. As a result an induced current is developed in it, which varies with time as shown in figure. The magnitude of change in flux through the coil in webers is
Some magnetic flux is changed from a coil of resistance 10 ohm. As a result an induced current is developed in it, which varies with time as shown in figure. The magnitude of change in flux through the coil in webers is
physics-General
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A horizontal loop abcd is moved across the pole pieces of a magnet as shown in fig. with a constant speed v. When the edge ab of the loop enters the pole pieces at time t = 0 sec. Which one of the following graphs represents correctly the induced emf in the coil
A horizontal loop abcd is moved across the pole pieces of a magnet as shown in fig. with a constant speed v. When the edge ab of the loop enters the pole pieces at time t = 0 sec. Which one of the following graphs represents correctly the induced emf in the coil
physics-General
physics-
An alternating current of frequency 200 rad/sec and peak value 1A as shown in the figure, is applied to the primary of a transformer. If the coefficient of mutual induction between the primary and the secondary is 1.5 H, the voltage induced in the secondary will be
An alternating current of frequency 200 rad/sec and peak value 1A as shown in the figure, is applied to the primary of a transformer. If the coefficient of mutual induction between the primary and the secondary is 1.5 H, the voltage induced in the secondary will be
physics-General
physics-
The current through a 4.6 H inductor is shown in the following graph. The induced emf during the time interval t = 5 milli-sec to 6 milli-sec will be
The current through a 4.6 H inductor is shown in the following graph. The induced emf during the time interval t = 5 milli-sec to 6 milli-sec will be
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maths-
Statement (1): Two perpendicular tangents of parabola y2 = 16x always meet on x + 4 = 0.
Statement (2): Two perpendicular tangents of a parabola, always meets on axis.
Statement (1): Two perpendicular tangents of parabola y2 = 16x always meet on x + 4 = 0.
Statement (2): Two perpendicular tangents of a parabola, always meets on axis.
maths-General
maths-
Statement (1): The curve 9y2 –16x –12y –57 = 0 is symmetric about line 3y = 2.
Statement (2): A parabola is symmetric about it’s axis.
Statement (1): The curve 9y2 –16x –12y –57 = 0 is symmetric about line 3y = 2.
Statement (2): A parabola is symmetric about it’s axis.
maths-General
maths-
y2 = 4x is the equation of a parabola.
Assertion : Through ( + 1), 3 normals can be drawn to the parabola, if < 2
Reason : The point ( + 1) lies outside the parabola for all –1.
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Assertion : Through ( + 1), 3 normals can be drawn to the parabola, if < 2
Reason : The point ( + 1) lies outside the parabola for all –1.
maths-General
maths-
Assertion (A) : In given fig., Length of ST = 8
Reason (R) : The tangents at point P and Q on parabola meet in T, then ST2 = SP. SQ.
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Reason (R) : The tangents at point P and Q on parabola meet in T, then ST2 = SP. SQ.
maths-General
physics-
The variation of induced emf (E) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity is best represented as
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physics-General
physics-
The graph Shows the variation in magnetic flux with time through a coil. Which of the statements given below is not correct
The graph Shows the variation in magnetic flux with time through a coil. Which of the statements given below is not correct
physics-General
physics-
A simple pendulum with bob of mass m and conducting wire of length L swings under gravity through an angle . The earth’s magnetic field component in the direction perpendicular to swing is B. Maximum potential difference induced across the pendulum is
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physics-General