Specimen copy of Resonance Distance Learning program for KVPY SA Stream. Visit @ www.edushoppee.com to purchase.Full description
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Analysis of last three years papers of Stream SA of KVPY examination
INTERVIEW QUESTIONS
Specimen copy of Resonance Distance Learning program for KVPY SA Stream. Visit @ www.edushoppee.resonance.ac.in to purchase.
This is the book for KVPY Examination for Physics of Standard 11thFull description
KVPY INTERview BookletFull description
KVPY QUESTION WITHANSWER(26-10-10)
1.
Sol.
The base radius of a solid in the form of a cone is 4 cm and the height of the cone is 9 cm. It is melted and recast into spherical balls of radius 0.5 cm. Find the number of balls, thus obtained. (A) 512 (B) 300 (C*) 288 (D) 412 Let the number of spherical balls be n. Then, the volume of the cone co ne will be equal to the sum of the volumes of the spherical balls. The radius of the base of the cone = 4 cm 1 and the radius of the sphere = cm. 2 1 Now, the volume of the cone = × 4 2 × 9 3 cm3 = 48 cm3 3
4 1 and, the volume of each sphere = cm3 3 2
cm3 6 Hence, we have =
= 48 n = 6 × 48 = 288 6 Hence, the required number of balls = 288.
n
2.
Sol.
An object is located 0.20 metre from a converging lens which which has a focal length of 0.15 metre, Relative to the object, the image formed by the lens will be : (A) real, erect and smaller (B) real, inverted and smaller (C) virtual, erect and larger (D*) real, inverted and larger u > f , so image will be real, inverted and larger
3
The reaction quotient (Q) for the reaction N2(g) + 3H2(g) [NH3 ]2 [N2 ][H2 ]3
2NH3(g) is given given by Q =
. The reaction will proceed from right
to left if
Sol.
(A) Q < Kc
(B*) Q > Kc
(C) Q = 0
(D) Q = Kc
Q > Kc will make the reaction to proceed from right to left.
4.
The mountaineers carry O2 with them because: (A*) At an altitude of more than 5 km there is no air. (B) The amount of air available to person is less than that available on ground. (C) The temperature of air is higher than that on the ground. (D) All of these