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1436. The quantity of water vapour the atmosphere can hold :
A. decreases with increases of temperature
B. is independent of temperature
C. increases with increase of temperature
D. fluctuates with increase of temperature
Explanation:
1437. Cyclotron is a device which :
A. detects and analyses the spectrum of light emitted by stars
B. accelerates aubatomic particles using combined electric and magnetic fields
C. detects the cyclic variation in the intensity of electromagmetic radiation emitted from stars
D. measures the intensity of X-rays
Explanation:
1438. How should a man wearing spectacles work with a microscope ?
A. He sholud keep on wearing spectacles
B. He should take off spectacles
C. He cannot use the microscope at all
D. Wearing or taking off makes little difference
Explanation:
1439. Rocket works on the principle of :
A. conservation of mass
B. conservation of energy
C. conservation of momentum
D. none of these
Explanation:
1440. A body is stable if it has a :
A. broad base and a high centre of gravity
B. broad base and a low cnetre of gravity
C. narrow base and a high centre of gravity
D. narrow base and a low centre of gravity
Explanation:
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