Physics
Grade-7
Easy
Question
When a parallel beam of light falls on a surface of a convex lens, it ____ the rays of light in it to a point called ____.
- Diverges, point of incidence
- Diverges, focus
- Converges, point of incidence
- Converges, focus
The correct answer is: Converges, focus
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The number of children in some families is recorded in the table shown below,
|
No. of children |
0 |
1 |
2 |
3 |
4 |
|
No. of families |
5 |
20 |
32 |
10 |
3 |
The number of children in some families is recorded in the table shown below,
|
No. of children |
0 |
1 |
2 |
3 |
4 |
|
No. of families |
5 |
20 |
32 |
10 |
3 |
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A dental survey of 500 students in a school revealed that 60 of them had two or more cavities. If the total school enrolment is 1500, how many students would you expect to have two or more cavities?
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Four people conducted an experiment to find how often a flipped coin lands on tails. The results are shown in the table below.
|
Name |
Total flips |
Tails |
|
Brent |
55 |
26 |
|
Bob |
70 |
38 |
|
Amir |
50 |
22 |
|
David |
80 |
41 |
|
Total |
255 |
127 |
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|
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|
Brent |
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|
Bob |
70 |
38 |
|
Amir |
50 |
22 |
|
David |
80 |
41 |
|
Total |
255 |
127 |
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