Einstein called his desk drawer at the patent office the ‘bureau of theoretical physics’ because he was working as a technical expert in the patent office in Bern where he was supposed to be assessing other peoples’ inventions. The drawer was the place were he used to store his secretly developed ideas.
Why was Santosh sent to the local school?
When did she leave home for Delhi, and why?
Length (in hours) | Number of lamps |
|---|---|
300 − 400 | 14 |
400 − 500 | 56 |
500 − 600 | 60 |
600 − 700 | 86 |
700 − 800 | 74 |
800 − 900 | 62 |
900 − 1000 | 48 |
(i) Represent the given information with the help of a histogram.
(ii) How many lamps have a lifetime of more than 700 hours?
Why was Santosh sent to the local school?