Q. You arc travelling in a car during a thunder storm. In order to protect yourself from lightning would you prefer to -
1) remain in the car
2) take shelter under a tree
3) get out and be flat on the ground
4) touch the nearest electric pole
Q. A sextant Is used to measure -
1) area of a hill
2) breadth of a tower
3) height of an object
4) volume of a building
Q. Just before time of Sunrise or Sunset, the Sun appears to be oval because -
1) the Sun changes its shape at that time
2) of the scaltering of light
3) of the effect of refraction
4) of the effect of diffraction
Q. If an object is placed between two parallel plane mirrors, the number of images formed is -
1) Four
2) One
3) Two
4) Infinite
Q. Fans, bulbs and tubes etc. in houses are fitted in -
1) Series order
2) Parallel order
3) Mixed order
4) Any order
Q. The best conductor of electricity among following is -
1) Silver
2) Copper
3) Gold
4) Mica
Q. Because of which characteristic, a rod dipped in water vessel seems to be bent ?
1) Reflection
2) Refraction
3) Diffraction
4) Polarisation
Q. When shaving brush is taken out of water, Its hair (wire threads) adhere together due to -
1) friction
2) elasticity
3) viscosity
4) surface tension
Q. When velocity of a moving body is doubled, its kinetic energy will be -
1) Two times
2) Four times
3) One-fourth
4) unchanged
Q. Electric current is measured using which of the following instrument ?
1) Voltmeter
2) Anemometer
3) Wattmeter
4) Ammeter
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