Subject :NSO Class : Class 5
Subject :NSO Class : Class 3
Study the diagram shown below which shows X, Y and Z as three states of water.
Which arrows, K, L, M or N, represent the processes of freezing and boiling?
Freezing | Boiling | |
A | K | M |
B | K | L |
C | M | N |
D | N | M |
WHY THIS QUESTION ANSWERS C
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 9
Ans 1:
Class : Class 9
Correct ans:D.
The gravitational force is equal to the centripetal force acting between the Sun and Planet.
GMm/r^2=Mv^2/r
=>v^2=Gm/r.
Also,T=2(pi)r/v.
Squaring both the sides we will get
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 5