Physics-
General
Easy
Question
A detector is moving in a circular path of radius r in anticlock wise direction with a constant angular velocity w as shown in the figure. At time t=0, it starts from the location shown at A, assuming source at rest. The frequency as received by the detector when it rotates by an angle 
The correct answer is:
Related Questions to study
physics-
Two speakers 
driven by the same amplifiers are placed at y=1m and y=-1m. The speakers vibrate in phase at 600 Hz. A man stands at a point on x-axis at a very large distance from the origin and starts moving parallel to y-axis. The speed of sound in air is 330 m/s. If he continuous to walk along the same line how many more maxima can he hear
Two speakers driven by the same amplifiers are placed at y=1m and y=-1m. The speakers vibrate in phase at 600 Hz. A man stands at a point on x-axis at a very large distance from the origin and starts moving parallel to y-axis. The speed of sound in air is 330 m/s. If he continuous to walk along the same line how many more maxima can he hear
physics-General
physics-
Two speakers 
driven by the same amplifiers are placed at y=1m and y=-1m. The speakers vibrate in phase at 600 Hz. A man stands at a point on x-axis at a very large distance from the origin and starts moving parallel to y - axis. The speed of sound in air is 330 m/s. The angle q at which he will hear maximum intensity for first time?
Two speakers driven by the same amplifiers are placed at y=1m and y=-1m. The speakers vibrate in phase at 600 Hz. A man stands at a point on x-axis at a very large distance from the origin and starts moving parallel to y - axis. The speed of sound in air is 330 m/s. The angle q at which he will hear maximum intensity for first time?
physics-General
physics-
Two speakers driven by the same amplifiers are placed at y=1m and y=-1m. The speakers vibrate in phase at 600 Hz. A man stands at a point on x-axis at a very large distance from the origin and starts moving parallel to y-axis. The speed of sound in air is 330 m/s. The angle q at which intensity of sound drop to a minimum for the first time
Two speakers driven by the same amplifiers are placed at y=1m and y=-1m. The speakers vibrate in phase at 600 Hz. A man stands at a point on x-axis at a very large distance from the origin and starts moving parallel to y-axis. The speed of sound in air is 330 m/s. The angle q at which intensity of sound drop to a minimum for the first time
physics-General
physics-
When a composite wire is made by joining two wires as shown in figure and possible frequencies of this wire is asked (both ends fixed) then the lowest frequency is that at which individual lowest frequencies of the two wires are equal. The lowest frequency such that the junction is an antinode is
In the figure given : 
When a composite wire is made by joining two wires as shown in figure and possible frequencies of this wire is asked (both ends fixed) then the lowest frequency is that at which individual lowest frequencies of the two wires are equal. The lowest frequency such that the junction is an antinode is
In the figure given :
physics-General
physics-
When a composite wire is made by joining two wires as shown in figure and possible frequencies of this wire is asked (both ends fixed) then the lowest frequency is that at which individual lowest frequencies of the two wires are equal. The lowest frequency such that the junction is a node is
In the figure given :
When a composite wire is made by joining two wires as shown in figure and possible frequencies of this wire is asked (both ends fixed) then the lowest frequency is that at which individual lowest frequencies of the two wires are equal. The lowest frequency such that the junction is a node is
In the figure given :
physics-General
physics-
Figure shows the shape of a string, the pairs of points which are in opposite phase is
Figure shows the shape of a string, the pairs of points which are in opposite phase is
physics-General
physics-
In the circuit shown L1, L2, L3, and L4 are identical light bulbs. There are six voltmeters connected to the circuit as shown. Assume that the voltmeters are ideal. If L3 were to burn out, opening the circuit, which voltmeter(s) would read zero volts?
In the circuit shown L1, L2, L3, and L4 are identical light bulbs. There are six voltmeters connected to the circuit as shown. Assume that the voltmeters are ideal. If L3 were to burn out, opening the circuit, which voltmeter(s) would read zero volts?
physics-General
physics-
The potentiometer circuit shown is used to find the internal resistance of the cell E. At balance, the galvanometer pointer does not deflect, and NO current flows through
a) the potentiometer wire PQ
b) the resistor R
c) the galvanometer G
The potentiometer circuit shown is used to find the internal resistance of the cell E. At balance, the galvanometer pointer does not deflect, and NO current flows through
a) the potentiometer wire PQ
b) the resistor R
c) the galvanometer G
physics-General
physics-
In the above circuit, C denotes the balance position on the potentiometer wire AB. Which of the following procedures can shift C towards the end B?
a) replacing the driving cell X by one with a smaller EMF
b) adding a resistance in series with the galvanometer G
c) increasing the resistance of the rheostat R
In the above circuit, C denotes the balance position on the potentiometer wire AB. Which of the following procedures can shift C towards the end B?
a) replacing the driving cell X by one with a smaller EMF
b) adding a resistance in series with the galvanometer G
c) increasing the resistance of the rheostat R
physics-General
chemistry-
Identify Z in the following series 
Identify Z in the following series
chemistry-General
chemistry-
Which does not give iodoform reaction?
Which does not give iodoform reaction?
chemistry-General
chemistry-
Which one of the following compounds when heated with KOH and a primary amine gives carbylamine test?
Which one of the following compounds when heated with KOH and a primary amine gives carbylamine test?
chemistry-General
chemistry-
The well known insecticide – gammexane is one of the steroisomers of hexachlorocyclohexane. The reagent useful for conversion of benzene into hexa chlorocyclohexane is
The well known insecticide – gammexane is one of the steroisomers of hexachlorocyclohexane. The reagent useful for conversion of benzene into hexa chlorocyclohexane is
chemistry-General
chemistry-
Ethylene dichloride and ethylidene dichloride are isomeric compounds. Identify the statement which is not applicable to both of them
Ethylene dichloride and ethylidene dichloride are isomeric compounds. Identify the statement which is not applicable to both of them
chemistry-General
physics-
The coordinates of the centre of the smallest circle passing through the origin and having 
as a diameter are
The coordinates of the centre of the smallest circle passing through the origin and having as a diameter are
physics-General
