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AISSCE 2009 PHYSICS SET - 1

ONE MARK QUESTIONS

1. What is the electrostatic potential due to an electric dipole at an equatorial point?

2. Name the EM waves used for studying crystal structure of solids?. What is its frequency

range?

3. An electron does not suffer any deflection while passing througha region of uniform

magneticfield. What is the direction of the magnetic field?

. !ow would the angular separation of interference fringes in "oung#s dou$le slit

e%periment change when the distance $etween the slits and the screen is dou$led?

&. 'wo thin lenses of power ()* and +2* are in contact. What is the focal length of the

com$ination?

). 'he stopping potential in an e%periment on photoelectric effect is 1.& ,. What is the

ma%imum -inetic energy of the photo electrons emitted?

. 'wo nuclei have mass num$ers in the ratio 1/0. What is the ratio of their nuclear radii?

0. ive the logic sym$ol of N3 gate.

TWO MARKS QUESTIONS

4. *raw three equipotential surfaces corresponding to a field that uniformly increases in

magnitude $ut remains constant along 5 direction. !ow are these surfaces different fromthat of a constant electric field along 5 direction?

16. *efine electric flu%. Write its 78 unit. A charge q is enclosed $y a spherical surface ofradius 3. 8f the radius is reduced to half9 how would the electric flu% through the surface

change?

11. *efine refractive inde% of a transparent medium. A ray of light passes through atriangular prism. :lot a graph showing the variation of the angle of deviation with the

angle of incidence.

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12. ;alculate the current drawn from the $attery in the given networ-.

13.Answer the following questions ray astronomy is possi$le only from satellitesor$iting the earth. Why?

1. *efine current sensitivity and voltage sensitivity of a galvanometer. 8ncreasing the

current sensitivity may not necessarily increase the voltage sensitivity of a galvanometer.ustify.

1&. *efine the term #linearly polarised light#.

1). A wire of 1& @ resistance is gradually stretched to dou$le its original length. 8t is then cut

into two equal parts. 'hese parts are then connected in parallel across a .6 volt $attery.Bind the current drawn from the $attery.

1.

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When an un-nown

resistance > is connected in parallel with resistance 79 the $alance point shifts to adistance l2. Bind the e%pression for > in terms of l19 l2and 7.

21.

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2. *raw a plot showing the variation of $inding energy per nucleon versus the mass num$er

A. E%plain with the help of this plot the release of energy in the processes of nuclear

fission and fusion.FIVE MARKS QUESTIONS

28.*raw a schematic s-etch of a cyclotron. E%plain $riefly how it wor-s and how it is usedto accelerate the charged particles.

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