Recent questions tagged easy

In a certain code language CRICKET is coded as TEKCIRC. How will you decode the word THGUOF?

asked Aug 23, 2016 by balaji.thirumalai

1 answer

Find the next two terms in this series: Y, W, U, S, Q, .......

asked Aug 23, 2016 by balaji.thirumalai

1 answer

Find the missing term in this series: ZA, YB, XC, ____, VE....

asked Aug 22, 2016 by balaji.thirumalai

1 answer

Raj starts from the bus stand and goes to the airport. What is the angle of turn clockwise and anti clockwise?

asked Aug 22, 2016 by balaji.thirumalai

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Raj started from his house turned left, and went the airport to pick up a friend. While returning, back to his house, he turned right from the airport to reach home. What was the angle of the turn to the airport and on the return?

asked Aug 22, 2016 by balaji.thirumalai

1 answer

Raj was initially facing the library as shown here. If he turned right and walked all the way to the swimming pool, what is the angle of the turn?

asked Aug 22, 2016 by balaji.thirumalai

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Raj was initially facing the library as shown here. After he made a 235$^{\circ}$ turn anti clockwise what is he now facing?

asked Aug 22, 2016 by balaji.thirumalai

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Raj was initially facing the library as shown here. After he made a turn he now faced the hospital. What was the angle and direction of the turn?

asked Aug 22, 2016 by balaji.thirumalai

1 answer

If yesterday was Sunday, what day of the week will it be 7th day from today?

asked Aug 22, 2016 by balaji.thirumalai

1 answer

Find the wave length of EM wave of frequency $ 6 \times 10^{12}\;Hz$ in free space .

asked Aug 22, 2016 by meena.p

1 answer

A light have a wavelength of $6000^{\circ} A $ What is the energy of this light

asked Aug 22, 2016 by meena.p

1 answer

give relation with the E.M waves travel?

asked Aug 22, 2016 by meena.p

1 answer

In a plane electro magnetic wave the electric field oscillates simultaneously at a frequency $3 \times 10^{10} Hz $ and amplitude $50\;v/m$ what is the wave length of the wave

asked Aug 22, 2016 by meena.p

1 answer

What feature of electromagnetic waves led Maxwell to conclude that light itself is electro magnetic wave ?

asked Aug 22, 2016 by meena.p

1 answer

Electromagnetic wave with wave length $ \lambda$ is used to improve visibillity in runways during fog and most condition

asked Aug 20, 2016 by meena.p

1 answer

Electromagnetic wave with wave length $ \lambda$ is used to detect leakage of oil in underground pipe lines

asked Aug 20, 2016 by meena.p

1 answer

Electromagnetic wave with wave length $ \lambda$ is used to kill germs in water purifier

asked Aug 20, 2016 by meena.p

1 answer

Electromagnetic wave with wave length $ \lambda$ is used in satellite communication . Identify and name the part of electromagnetic spectrum to which these radiation belong

asked Aug 20, 2016 by meena.p

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A variable frequency a.c source is connected to a capacitor .How will the displacement current change with decrease in frequency ?

asked Aug 20, 2016 by meena.p

1 answer

Why does microwave over heats up a food item containing water molecules more efficiently ?

asked Aug 20, 2016 by meena.p

1 answer

Why is the orientation of the protable radio with respect to broad casting station important ?

asked Aug 20, 2016 by meena.p

1 answer

The source of electromagnetic waves can be a charge

asked Aug 20, 2016 by meena.p

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A plane electro magnetic wave propagating along x - direction can have following pair of $\overrightarrow{E}$ and $\overrightarrow{B}$

asked Aug 20, 2016 by meena.p

1 answer

An EM wave radiation outwards from a dipole antenna with $E_0$ as the amplitude of its electric field vector . The electric field $E_0$ which transports significant energy from the source falls off as

asked Aug 19, 2016 by meena.p

1 answer

If $\overrightarrow{E}$ and $\overrightarrow{B}$ represent electric and magnetic field vectors of the electro magnetic wave is along

asked Aug 19, 2016 by meena.p

1 answer

Some scientists have predicted that a global nuclear war on the earth would be followed by a severe nuclear winter with a devastating effect on life on earth. What might be the basis of their prediction ?

asked Aug 18, 2016 by meena.p

1 answer

If the earth did not have atmosphere would its average temperature be higher or lower than it is now ?

asked Aug 18, 2016 by meena.p

1 answer

The small ozone layer on the top of the atmosphere is for human survival on why ?

asked Aug 18, 2016 by meena.p

1 answer

Optical and radio telescopes are built on the ground but x- ray astronomy is possible only from satellite orbiting the earth . why ?

asked Aug 18, 2016 by meena.p

1 answer

It is necessary to use satellites for long distance T.V transmission . Why ?

asked Aug 18, 2016 by meena.p

1 answer

Long distance ratio broad casts use short wave bands why ?

asked Aug 18, 2016 by meena.p

1 answer

State the parts of e.m spectrum to which $14.4\;kev$ (energy of a particular transition $Cn Fe^{57} $ nucleus associated with a famous high resolution spectroscopic method Massbauer spectroscopy ]

asked Aug 18, 2016 by meena.p

1 answer

State the parts of e.m spectrum to which $5890^{\circ} A - 5896 ^{\circ} A$ (double lines of sodium).

asked Aug 18, 2016 by meena.p

1 answer

State the parts of e.m spectrum to which $2.7 \;k$ (temperature with isotropic radiation filly all space - through to be a relic of the big bang origin of the universe ).

asked Aug 18, 2016 by meena.p

1 answer

State the part of the spectrum to which $1057\;MHz$ [frequency of radiation arising from two close energy levels in hydrogen known as lamb shift .

asked Aug 18, 2016 by meena.p

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State the part of the spectrum to which $21\;cm$ (wave length emitted by atomic hydrogen in interstellar space)

asked Aug 18, 2016 by meena.p

1 answer

About $5\%$ of the power of a low light bulb is converted to visible radiation . What is the average intensity of visible radiation , at a distance of $10\;m$. Assume that the radiation is emitted isotropic-ally and neglect reflection .

asked Aug 18, 2016 by meena.p

1 answer

About $5\%$ of the power of a low light bulb is converted to visible radiation . What is the average intensity of visible radiation , at a distance of 1m from the bulb ?

asked Aug 18, 2016 by meena.p

1 answer

Suppose that the electric field part of an electromagnetic wave in vaccum is $E= 3.1 \times N/c $ an $[(1/8 rad/m)y +(5.4 \times 10^8\;rad/s/t)$ what is the amplitude of the magnetic field part of the wave ?

asked Aug 18, 2016 by meena.p

1 answer

Suppose that the electric field part of an electromagnetic wave in vaccum is $E= 3.1 \times N/c $ an $[(1/8 rad/m)y +(5.4 \times 10^8\;rad/s/t)$ write an expression for the magnetic field part of the wave

asked Aug 18, 2016 by meena.p

1 answer

Suppose that the electric field part of an electromagnetic wave in vaccum is $E= 3.1 \times N/c $ an $[(1/8 rad/m)y +(5.4 \times 10^8\;rad/s/t)$ what is the frequency of $\gamma$

asked Aug 17, 2016 by meena.p

1 answer

Suppose that the electric field part of an electromagnetic wave in vaccum is $E= 3.1 \times N/c $ cos $[(1/8 rad/m)y +(5.4 \times 10^8\;rad/s/t)$ what is the amplitude of the magnetic field part of the wave ?

asked Aug 17, 2016 by meena.p

1 answer

Suppose that the electric field part of an electromagnetic wave in vaccum is $E= 3.1 \times N/c $ an $[(1/8 rad/m)y +(5.4 \times 10^8\;rad/s/t)$ what is the direction of motion ?

asked Aug 17, 2016 by meena.p

1 answer

In a plane electromagnetic wave, the electric field oscillates sinusoidal at a frequency of $2.0 \times 10^{10}\;Hz$ and amplitude $48 vm^{-1}$. What is the wavelength of the wave ?Show that the total average energy density of magnetic field $( c= 3 \times 10^8 ms^{-1})$

asked Aug 17, 2016 by meena.p

1 answer

In a plane electromagnetic wave, the electric field oscillates sinusoidal at a frequency of $2.0 \times 10^{10}\;Hz$ and amplitude $48 vm^{-1}$. What is the wavelength of the wave ?

asked Aug 17, 2016 by meena.p

1 answer

Suppose that the electric field amplitude of an electromagnetic wave is $E_0 = 120 N/C$ and its frequency is $\gamma = 50.0 \;MHz$ . Find the expression of $\overrightarrow{E}$ and $\overrightarrow{B}$

asked Aug 17, 2016 by meena.p

1 answer

Suppose that the electric field amplitude of an electromagnetic wave is $E_0 = 120 N/C$ and its frequency is $\gamma = 50.0 \;MHz$ . Determine $B_0, w,k$ and $\lambda$

asked Aug 17, 2016 by meena.p

1 answer

The amplitude of the magnetic field part of a harmonic electro magnetic wave in vaccum is $B_0 =510\;nT$. What is the amplitude of the electric field part of the wave ?

asked Aug 17, 2016 by meena.p

1 answer

A changed particle oscillates about its mean equilibrium position with a frequency of $10^9\;Hz$. What is the frequency of electromagnetic waves produced by the oscillator ?

asked Aug 17, 2016 by meena.p

1 answer

What physical quantity is the same for x- rays of wave length $10^{-10}m$ red light of wave length $6800A^{\circ}$ and radio waves of wave length $500\;m$?

asked Aug 17, 2016 by meena.p

1 answer

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