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Q1. Given charge of an electron e = 1.6 x 10-19 and mass of an electron m = 9.1 x 10-31.

(a) True
(b) False
(c) Only Fractions
(d) c) Only Fractions

Q2. Find the velocity of an electron when its kinetic energy is equal to one electron volt (in 105m/s).

(a) 3.9
(b) 4.9
(c) 5.9
(d) 6.9

Q3. Find the mean free path of an electron travelling at a speed of 18m/s in 2 seconds.

(a) 9
(b) 36
(c) 0.11
(d) 4.5

Q4. The superconducting materials will be independent of which of the following?

(a) Magnetic field
(b) Electric field
(c) Magnetization
(d) Temperature

Q5. The magnetic susceptibility in a superconductor will be

(a) Positive
(b) Negative
(c) Zero
(d) Infinity

Q6. The magnetic field which destroys the superconductivity is called

(a) Diamagnetic field
(b) Ferromagnetic field
(c) Ferrimagnetic field
(d) Critical field

Q7. For a dielectric which of the following properties hold good?

(a) They are superconductors at high temperatures
(b) They are superconductors at low temperatures
(c) They can never become a superconductor
(d) They have very less dielectric breakdown voltage

Q8. Find the dielectric constant for a material with electric susceptibility of 4.

(a) 3
(b) 5
(c) 8
(d) 16

Q9. A dielectric can be made a conductor by

(a) Compression
(b) Heating
(c) Doping
(d) Freezing

Q10. Identify a good dielectric.

(a) Iron
(b) Ceramics
(c) Plastic
(d) Magnesium


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0 Answer
459 views

In A Closed Flask Of 5 Litres, 1.0 G Of H2 Is Headed From 300 To 600 K. Which Statement Is Not Correct

Modified 243 Year Ago

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243 Year Ago

In A Closed Flask Of 5 Litres, 1.0 G Of H2 Is Headed From 300 To 600 K. Which Statement Is Not Correct

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0 Answer
440 views

Equal Amounts Of Two Gases Of Molecular Weight 4 And 40 Are Mixed. The Pressure Of The Mixture Is 1.1 Atm. The Partial Pressure Of The Light Gas In This Mixture Is

Modified 243 Year Ago

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243 Year Ago

Equal Amounts Of Two Gases Of Molecular Weight 4 And 40 Are Mixed. The Pressure Of The Mixture Is 1.1 Atm. The Partial Pressure Of The Light Gas In This Mixture Is

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413 views

Assertion : Effusion Rate Of Oxygen Is Smaller Than Nitrogen. Reason : Molecular Size Of Nitrogen Is Smaller Than Oxygen.

Modified 243 Year Ago

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243 Year Ago

Assertion : Effusion Rate Of Oxygen Is Smaller Than Nitrogen. Reason : Molecular Size Of Nitrogen Is Smaller Than Oxygen.

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411 views

Molecules/ions And Their Magnetic Properties Are Given Below

Modified 243 Year Ago

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243 Year Ago

Molecules/ions And Their Magnetic Properties Are Given Below

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408 views

Assertion : We Air Is Heavier Than Dry Air. Reason : The Density Of A Dry Air Is More Than Density Of Water.

Modified 243 Year Ago

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243 Year Ago

Assertion : We Air Is Heavier Than Dry Air. Reason : The Density Of A Dry Air Is More Than Density Of Water.

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0 Answer
402 views

Assertion : 4.58mm And 0.0098°C Is Known To Be Triple Point Of Water. Reason : At This Pressure And Temperature All The Three States I.e., Water, Ice And Vapour Exist Simultaneously.

Modified 243 Year Ago

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243 Year Ago

Assertion : 4.58mm And 0.0098°C Is Known To Be Triple Point Of Water. Reason : At This Pressure And Temperature All The Three States I.e., Water, Ice And Vapour Exist Simultaneously.

0 votes
0 Answer
396 views

In Van Der Waals Equation Of State Of The Gas Law, The

Modified 304 Year Ago

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304 Year Ago

In Van Der Waals Equation Of State Of The Gas Law, The

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