NCERT 2022 | संश्लेषित रेशे एवं प्लास्टिक - L5 | CLASS8 विज्ञान | 8AM | Subhadra Mam

Magnetism-L5-L8

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows: 1 6 2 3 5 12 5 8 4 8 10 3 4 12 2 8 15 1 17 6 3 2 8 5 9 6 8 7 14 12 (i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5 - 10. (ii) How many children watched television for 15 or more hours a week?

Buses arrive at a specified stop at 15-minute intervals starting at 8.00 A.M. That is, they arrive at 8.00 A.M., 8.15 A 8.30 A.M., and on. If a passenger arrives at the stop at a time that is uniformly distributed between 8 A.M. and 8:30 AM, find the probability that she waits than 5 minutes for a bus.

Sheet Ex-2 (L-2) (3-5)|| Ex-3 (6-9), CPS-7, 8

An L-C-R series circuit has a maximum current of 5A . If L=0.5H and C=8muF , then the angular frequency of AC voltage is

The average age of boys in a class is 16.66, while the average age of girls is 18.75. Thus the average age of all the 40 students of the class is 17.5.If the difference between the no. of boys and girls is 8, then the no. of girls in the class is:

At NTP , 5.6 L of a gas weight 8 g . The vapour density of gas is :-

If the A.M. of the roots of a quadratic equation is (8)/(5) and the A.M. of their reciprocals is (8)/(7) then the equation is

Find the A.M. between: (i) 3.7 and 5.5 (ii) 6 and -8