Energy Crises In Pakistan Essay

555 words - 3 pages

BOARD OF INTERMEDIATE EDUCATION, KARACHI
INTERMEDIATE EXAMINATION, 2013 (ANNUAL) Date: 22.05.2013 9:30 a.m. to 9:50 a.m.
The correct answers are highlighted in red colour.

PHYSICS PAPER – II
(Science Groups) SECTION ‘A’ (MULTIPLE CHOICE QUESTIONS) – (M.C.Qs.)

Max. Marks: 17 Time: 20 minutes

NOTE:

i) ii) iii) iv)

This section consists of 17 part questions and all are to be answered. Write this Code No. in the Answerscript. Each question carries one mark. Do not copy down the part questions in your answerbook. Write only the answer in full against the proper number of the question and its part. The code number of your question paper is to be written in bold letters in the beginning of the answerscript. The use of scientific calculator is allowed. All notations are used in their usual meanings.

1.

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The resistivity *

 of each segment will be:
3

1  3

*

2  3

*

same as the whole wire

*

vi)

This was the first experimental verification of Einstein’s mass-energy relation: * Deutron-induced reaction * Protons-induced reaction * Gama induced reaction * none of these Meter bridge is used to measure: * electric current * voltage * resistance * * capacitance Potential energy

vii) viii) ix)

The sum of all the energies of the molecules in a substance is called: * Heat energy * Temperature * Kinetic energy The number of electrons in one coulomb charge is: *

6 1020

*

1.6 1018
*

* infinity

6.25 1018
*

* –1

9.11019

x)

The rest mass of the photon is: * 1 * zero In radioactive decay law * Wavelength

xi)

N  N0e t ,  represents:
* Half life * Decay constant * none of these

xii)

The speed of electromagnetic waves is given by: *

1

0 0

*

1

 0 0

*

0 0

*

 0 0

xiii) xiv)

The direction of induced current is given by: * Ohm’s law * Lenz’s law Resistors of 3,5 and the other resistors is: * 4 volts *

*

Coulomb’s law

*

Ampere’s law

7 are connected in parallel. If the P.D. across 5 resistor is 6 volt, the P.D. across
6 volts * 8 volts * 10 volts * Dynamo

xv) xvi)

The practical application of phenomenon of mutual inductance is: * A.C. generator * Transformer * Rectifier

As the temperature of Black Body is raised, the wavelength corresponding to the maximum intensity shifts towards: * Similar wavelength * Shorter wavelength * Longer wavelength * none of these The rate of flow of blood in the body can be traced by using this radio isotope: *
20

xvii)

Ca 45

*

11

Na 24

*

1

H3

*

6

C12

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