The lens illustrated above can best be described as a
converging meniscus
plano-convex
diverging meniscus
bi-convex
Correct answer is B
The diagram is that of a plano-convex lens; a type of converging lens.
Which of the following factors does not increase the rate of evaporation of water in a lake?
Increase in the pressure of the atmosphere
Rise in temperature
Increase in the surface area of the lake
Increase in the speed of the wind
Correct answer is A
The rate of evaporation is increased by the lowering of atmospheric pressure and not its increase. Every other factor stands, for the increase of evaporation process.
The ice point on the absolute scale of temperature is
0K
32K
100K
273K
Correct answer is A
The absolute zero of the scale of temperature being the ice point of the absolute scale of temperature is 0K, which is -273°C.
0.0ms−1
5.6ms−1
10.6ms−1
15.0ms−1
Correct answer is C
The horizontal component of velocity, Vx, is unaffected by the acceleration of free fall and remains constant.
Vx=Ux=Ucosθ
= 15×cos45=15×0.7071
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