A/417. A right circular cone of diameter k cm and height 12cm rests on the base of a rightcircular cylinder of radius k cm (their base lie in the same plane, as shown). Thecylinder is filled with water to a height of 12cm. If the cone is then removed, the heightto which the water will fall is:A. 1cmB. 2cmC. 3cmD. 4cmE. 3.2cm18. A needle placed 45cm from a lens forms an image on a screen placed 90cm on the otherside of lens, focal length and type of lens is:A. + 10cm, Convex lensB. + 30cm, Convex lensC. + 30cm, Concave lensD. + 10cm, Concave lensE. + 20cm, convex lens19. A body of mass 1kg initially at rest is moved by a horizontal force of 0.5N on a smoothfrictionless table. The work done by the force in 10sec. is:A. 10.5JB. 12.5JC. 20JD. 22JE. 18.5J20. The refractive index of air relative to glass is 2/3 and that of diamond relative to air is12/5. The refractive index of glass relative to diamond is:A.B.C.D.E.CHEMISTRY21. The total number of electrons in 18ml of water (density=1gmL–1) isA. 6.02x1023B. 6.02x1025C. 6.02x1024D. 6.02x18x1023E. 6.02x102222. An organic compound made of C, H and N contain 20% nitrogen, its minimummolecular weight isA. 70B. 140C. 100D. 65E. 120SPACE FOR ROUGH WORK
Question
A/417. A right circular cone of diameter k cm and height 12cm rests on the base of a rightcircular cylinder of radius k cm (their base lie in the same plane, as shown). Thecylinder is filled with water to a height of 12cm. If the cone is then removed, the heightto which the water will fall is:A. 1cmB. 2cmC. 3cmD. 4cmE. 3.2cm18. A needle placed 45cm from a lens forms an image on a screen placed 90cm on the otherside of lens, focal length and type of lens is:A. + 10cm, Convex lensB. + 30cm, Convex lensC. + 30cm, Concave lensD. + 10cm, Concave lensE. + 20cm, convex lens19. A body of mass 1kg initially at rest is moved by a horizontal force of 0.5N on a smoothfrictionless table. The work done by the force in 10sec. is:A. 10.5JB. 12.5JC. 20JD. 22JE. 18.5J20. The refractive index of air relative to glass is 2/3 and that of diamond relative to air is12/5. The refractive index of glass relative to diamond is:A.B.C.D.E.CHEMISTRY21. The total number of electrons in 18ml of water (density=1gmL–1) isA. 6.02x1023B. 6.02x1025C. 6.02x1024D. 6.02x18x1023E. 6.02x102222. An organic compound made of C, H and N contain 20% nitrogen, its minimummolecular weight isA. 70B. 140C. 100D. 65E. 120SPACE FOR ROUGH WORK
Solution
A/417. Un cono circular derecho de diámetro k cm y altura 12 cm descansa sobre la base de un cilindro circular derecho de radio k cm (sus bases están en el mismo plano, como se muestra). El cilindro está lleno de agua hasta una altura de 12 cm. Si luego se retira el cono, la altura a la que caerá el agua es:
A. 1 cm B. 2 cm C. 3 cm D. 4 cm E. 3.2 cm
- Una aguja colocada a 45 cm de una lente forma una imagen en una pantalla colocada a 90 cm del otro lado de la lente, la longitud focal y el tipo de lente son:
A. + 10 cm, lente convexa B. + 30 cm, lente convexa C. + 30 cm, lente cóncava D. + 10 cm, lente cóncava E. + 20 cm, lente convexa
- Un cuerpo de masa 1 kg inicialmente en reposo es movido por una fuerza horizontal de 0.5 N sobre una mesa lisa y sin fricción. El trabajo realizado por la fuerza en 10 segundos es:
A. 10.5 J B. 12.5 J C. 20 J D. 22 J E. 18.5 J
- El índice de refracción del aire con respecto al vidrio es 2/3 y el del diamante con respecto al aire es 12/5. El índice de refracción del vidrio con respecto al diamante es:
A. B. C. D. E.
CHEMISTRY
- El número total de electrones en 18 ml de agua (densidad = 1 g/mL) es:
A. 6.02x10^23 B. 6.02x10^25 C. 6.02x10^24 D. 6.02x18x10^23 E. 6.02x10^22
- Un compuesto orgánico hecho de C, H y N contiene un 20% de nitrógeno, su peso molecular mínimo es:
A. 70 B. 140 C. 100 D. 65 E. 120
SPACE FOR ROUGH WORK
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