Subject :NSO Class : Class 10
Class : Class 10
The answer for this question is 0.5m/s.first you should find the initial distance of the object.then after the object is moven try to find the final position of object .you can find this by using mirror formula.after this you woul get the initial and the final positions of the object as -50m and -25m respectively.then taked the distance covered by the object as 25 and divide it by time 20sec to calculate the speed of object and finally you get your answer as 0.5m/s. HOPE THIS WILL HELP YOU.
Subject :NSO Class : Class 10
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Subject :NSO Class : Class 6
Study the given Venn diagram. If (i) is curdling of milk, (ii) is ripening of fruits, (iii) is volcanic eruptions and (iv) is spoilage of food, then which of the following best identifies P, Q, R and S?
P | Q | R | S | |
---|---|---|---|---|
A | Chemical change |
Irreversible change |
Periodic change |
Fast change |
B | Physical change |
Periodic change |
Non-periodic change |
Slow change |
C | Periodic change |
Desirable change |
Non-periodic change |
Fast change |
D | Desirable change |
Non-periodic change |
Undesirable change |
Slow change |
truck this hit i am out
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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 8
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 8
The given table shows some properties of four substances P, Q, R and S.
Study the table carefully and identify P, Q, R and S.
P | Q | R | S | |
A | Sodium | Iron | Gold | Copper |
B | Calcium | Aluminium | Phosphorus | Gold |
C | Potassium | Zinc | Graphite | Aluminium |
D | Sodium | Magnesium | Copper | Iron |
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Subject :NSO Class : Class 4