A charged rod is touched to a small metallic sphere placed at the origin. This is done at time t = 0. A sensitive field detector detects the electric fields at points 10 cm away and 50 cm away at time t = 1 nanosecond

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A charged rod is touched to a small metallic sphere placed at the origin. This is done at time  t  = 0. A sensitive field detector detects t...

If the doping level in a crystal diode is increased, the width of depletion layer ____. (Correct Answer)

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Question : If the doping level in a crystal diode is increased, the width of depletion layer ____ (A). remains the same (B). is decrease...

Metric coefficients of Spherical Polar coordinates

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A Carnot engine whose low temperature reservoir is at 7 degree Celsius has an efficiency of 50%. If it is desired to increase the efficiency to 70%, by how many degrees should the temperature of the high temperature reservoir be increased ?

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Find the mass of electron and kinetic energy of an electron moving with a velocity 0.99 c

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Electron in the atom are held in the atom due to

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Question : Electron in the atom are held in the atom due to (A). coulombs force (B). nuclear force (C). atomic force (D). coulomb...

In the formula of the angular momentum L = rxp (p) denotes the

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Question : In the formula of the angular momentum L xp (p) denotes the (A). displacement (B). power (C). momentum (D). speed Show...

The first linear equation of motion is represented as

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Question : The first linear equation of motion is represented as (A). Vi f + at (B). Vf i-at (C). Vf i + at (D). Vf i + a Show An...

If the turns ratio of transformer is 10 it means that

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Question : If the turns ratio of transformer is 10 it means that (A). Is 0 Ip (B). Ip 0 Is (C). Ns 0 Np (D). IsIp and IpIs Show...

The gate whose output is 0 only when the inputs are different is called

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Question : The gate whose output is 0 only when the inputs are different is called (A). XOR (B). XNOR (C). NOR (D). NAND Show Ans...

In 1909 Millikan devised the technique for measurement of

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Question : In 1909 Millikan devised the technique for measurement of (A). charge on electron (B). charge on cathode (C). charge on ...

At low temperature a body emits radiation of

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Question : At low temperature a body emits radiation of (A). shorter wave length (B). high frequencies (C). longer wavelength (D)...

In a PNP transistor the n-region as compared to the p-region is

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Question : In a PNP transistor the n-region as compared to the p-region is (A). smaller (B). larger (C). same (D). negligible Sho...

The change in kinetic energy is measured as the difference of

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Question : The change in kinetic energy is measured as the difference of (A). 1/2(mv)� (B). (mv)� (C). 1/2(mv) (D). 1/2(m)� Show ...

Changing current in a coil produces emf in the same coil is known as

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Question : Changing current in a coil produces emf in the same coil is known as (A). mutual induction (B). self induction (C). indu...

According to the system international the length of the substance is measured in

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Question : According to the system international the length of the substance is measured in (A). moles (B). seconds (C). meters (...

Zero digit is the only digit that

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Question : Zero digit is the only digit that (A). maybe significant (B). may not be significant (C). is significant (D). both may...

At low temperature a body emits radiation of

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Question : At low temperature a body emits radiation of (A). shorter wave length (B). high frequencies (C). longer wavelength (D)...

In 1909 Millikan devised the technique for measurement of

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Question : In 1909 Millikan devised the technique for measurement of (A). charge on electron (B). charge on cathode (C). charge on ...

If the turns ratio of transformer is 10 it means that

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Question : If the turns ratio of transformer is 10 it means that (A). Is 0 Ip (B). Ip 0 Is (C). Ns 0 Np (D). IsIp and IpIs Show...