General Studies  Physics

41. Which one of the following is not a magnetic substance

Nickle Copper Iron Cobalt

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42. In convex lens object placed at 2F,image formed at

at 2F Beyond 2F At infinity at F

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43. For total internal reflection

i=c i>c i i=90

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44. Which of the following fuel used in nuclear reactor

U-238 Th-232 U-235 Ra-226

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45. X-rays are absorbed by

Gold Silver Aluminium paper

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46. The energy produced by sun and star is due to

Nuclear fusion Nuclear fusion Thermo nuclear reaction All

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47. Unit of specific heat capacity

Jkg-1k-1 Jkg-1 Jk-1 Jk kg

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48. Write the substance in the ascending order on the basis of expansion of heat

Liquid,solid,Gas Solid,Gas,Liquid Solid,Liquid,Gas None

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49. Boiling point of water in pressure cooker

100oC 120oC -120oC -13oC

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50. What will happen ,when gas is heated

volume and pressure changed Only volume changed Only pressure changed Volume and pressure not changed

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