
General Knowledge : General Science QUESTIONS AND ANSWERS :: part25 : 31 to 35
Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :
31.Suppose a rocketship is receding from the earth at a speed of 2/10th the velocity of light. a light in the rocketship appears blue to the passenger on the ship. What colour would it appear to an observer on the earth ? |
Blue |
Orange |
Yellow |
Yellow-Orange |
32.Endoscope, used by doctors for examining the inside of a patients stomach, works on the principle of : |
reflection of light |
dispersion of light |
refraction of light |
total internal reflection of light |
33.The minimum length of a plane mirror in which a person can see himself full length should be : |
equal to the persons height |
slightly more than his height |
nearly half his height |
nearly one-fourth his height |
34.In storms, the roofs of some houses are carried away.This is in accordance with : |
Bernoullis principle |
Archimedes principle |
Law of inertia |
Pascals law |
35.Consider the following statements about a thermos flask : 1. It is a practical device in which the heat flowing into or out of the system by conduction, convection or radiation is reduced as much as possible2. It consists of a double walled glass vessel3. The heat transfer by convection is minimised by silvering the surfaces and the radiation is minimised by evacuating the space between the walls. |
1 and 2 |
2 and 3 |
1 and 3 |
1, 2 and 3 |
More General Science QUESTIONS AND ANSWERS available in next pages
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Health is the greatest gift, contentment is the greatest wealth -Buddha

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