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Physics-

General

Easy

Question

A radar sends the waves towards a distant object and receives the signal reflected by object. These waves are

Sound waves
Light waves
Radio waves
Micro waves

The correct answer is: Micro waves

Now a days microwaves are used to locate the flying objects by radar

Related Questions to study

The magnetic field between the plate of a capacitor where $r greater than R$ is given by (where $r$ is the distance from the axis of plates and $R$ is the radius of each plate of capacitor)

The magnetic field between the plate of a capacitor where $r greater than R$ is given by (where $r$ is the distance from the axis of plates and $R$ is the radius of each plate of capacitor)

Physics-General

The maximum distance upto which TV transmission from a TV tower of height $h$ can be received is proportional to

The maximum distance upto which TV transmission from a TV tower of height $h$ can be received is proportional to

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Radio wave diffract around building although light waves do not. The reason is that radio waves

Radio wave diffract around building although light waves do not. The reason is that radio waves

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A TV tower has a height of 100 m. How much population is covered by the TV broadcast if the average population density around the tower is $100 blank k m to the power of negative 2 end exponent$ (radius of the earth $equals 6.37 cross times 10 to the power of 6 end exponent$ m)

A TV tower has a height of 100 m. How much population is covered by the TV broadcast if the average population density around the tower is $100 blank k m to the power of negative 2 end exponent$ (radius of the earth $equals 6.37 cross times 10 to the power of 6 end exponent$ m)

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The temperature variation in the region of stratosphere lies from

The temperature variation in the region of stratosphere lies from

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The amplitude of the magnetic field part of a harmonic Electromagnetic Wave in vacuum is B₀=510 nT. What is the amplitude of the electric field part of the wave?

The amplitude of the magnetic field part of a harmonic Electromagnetic Wave in vacuum is B₀=510 nT. What is the amplitude of the electric field part of the wave?

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The value of $3 to the power of log subscript 4 end subscript invisible function application 5 end exponent minus 5 to the power of log subscript 4 end subscript invisible function application 3 end exponent$ is

The value of $3 to the power of log subscript 4 end subscript invisible function application 5 end exponent minus 5 to the power of log subscript 4 end subscript invisible function application 3 end exponent$ is

The number of distinct real roots of $open vertical bar table row cell sin invisible function application x end cell cell cos invisible function application x end cell cell cos invisible function application x end cell row cell cos invisible function application x end cell cell sin invisible function application x end cell cell cos invisible function application x end cell row cell cos invisible function application x end cell cell cos invisible function application x end cell cell sin invisible function application x end cell end table close vertical bar equals 0$ in the interval $– fraction numerator pi over denominator 4 end fraction less or equal than x less or equal than fraction numerator pi over denominator 4 end fraction$ is

The number of distinct real roots of $open vertical bar table row cell sin invisible function application x end cell cell cos invisible function application x end cell cell cos invisible function application x end cell row cell cos invisible function application x end cell cell sin invisible function application x end cell cell cos invisible function application x end cell row cell cos invisible function application x end cell cell cos invisible function application x end cell cell sin invisible function application x end cell end table close vertical bar equals 0$ in the interval $– fraction numerator pi over denominator 4 end fraction less or equal than x less or equal than fraction numerator pi over denominator 4 end fraction$ is

A piece of paper is in the shape of a square of side 1 m long. It is cut at the four corners to make a regular polygon of eight sides (octagon). The area of the polygon is

A piece of paper is in the shape of a square of side 1 m long. It is cut at the four corners to make a regular polygon of eight sides (octagon). The area of the polygon is

parallel

The number of solution of the equation $tan invisible function application x tan invisible function application 4 x equals 1 blank$ for $0 less than x less than pi$ is

The number of solution of the equation $tan invisible function application x tan invisible function application 4 x equals 1 blank$ for $0 less than x less than pi$ is

The value of $cot invisible function application 70 degree plus 4 cos invisible function application 70 degree$ is

The value of $cot invisible function application 70 degree plus 4 cos invisible function application 70 degree$ is

In triangle $A B C comma blank angle A equals 60 degree comma angle B equals 40 degree blank$ and $blank angle C equals 80 degree.$ If $P$ is the centre of the circumcircle of triangle $A B C$ with radius unity, then the radius of the circumcircle of triangle $B P C$ is

In triangle $A B C comma blank angle A equals 60 degree comma angle B equals 40 degree blank$ and $blank angle C equals 80 degree.$ If $P$ is the centre of the circumcircle of triangle $A B C$ with radius unity, then the radius of the circumcircle of triangle $B P C$ is

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If in $blank increment A B C comma sin invisible function application A cos invisible function application B equals fraction numerator square root of 2 minus 1 over denominator square root of 2 end fraction$ and $sin invisible function application B cos invisible function application A equals fraction numerator 1 over denominator square root of 2 end fraction comma blank$ then the triangle is

If in $blank increment A B C comma sin invisible function application A cos invisible function application B equals fraction numerator square root of 2 minus 1 over denominator square root of 2 end fraction$ and $sin invisible function application B cos invisible function application A equals fraction numerator 1 over denominator square root of 2 end fraction comma blank$ then the triangle is

The equation $2 cos to the power of 2 end exponent invisible function application fraction numerator x over denominator 2 end fraction sin to the power of 2 end exponent invisible function application x equals x to the power of 2 end exponent equals x to the power of negative 2 end exponent semicolon 0 less than x less or equal than fraction numerator pi over denominator 2 end fraction$ has

The equation $2 cos to the power of 2 end exponent invisible function application fraction numerator x over denominator 2 end fraction sin to the power of 2 end exponent invisible function application x equals x to the power of 2 end exponent equals x to the power of negative 2 end exponent semicolon 0 less than x less or equal than fraction numerator pi over denominator 2 end fraction$ has

If $sin invisible function application x plus c o s e c blank x equals 2 comma$ then $sin to the power of n end exponent invisible function application x plus blank c o s e c to the power of n end exponent x$ is equal to

If $sin invisible function application x plus c o s e c blank x equals 2 comma$ then $sin to the power of n end exponent invisible function application x plus blank c o s e c to the power of n end exponent x$ is equal to

parallel

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