JEE 2021 | समतल में गति - L7 | speed in plane | Hindi Medium | Ravikant Sir | 7PM

A train from A leaves at 7 am at the speed of 25 km/ h to reach B and a train from B leaves for A at 12 pm at the speed of 35 km/h. Find the time at which they will meet.

Let L_1 be the line vec r_1=2 hat i+ hat j- hat k+lambda(i+2 hat k) and let L_2 be the line vec r_2=3 hat i+ hat j+mu(i+ hat j- hat k) . Let pi be the plane which contains the line L_1 and is parallel to L_2dot The distance of the plane pi from the origin is a. sqrt(6) b. 1//7 c. sqrt(2//7) d. none of these

A car can cover a distance of 420 km in 7 hours. How much speed should be increased to cover this distance in 6 hours ? कोई कार 7 h में 420 km की दूरी तय कर सकती है | दूरी को 6 h में तय करने के लिए गति कितनी बढ़ानी होगी?

Let L be the set of all lines in the plane and R be the relation in L, defined as : R = { (l_(i),l_(j))=l_(i) is parallel to l_(j),AA i,j }. Show that R is an equivalence relation. Find the set of all lines related to the line y=7x+5 .

A and B started simultaneously towards each other from P and Q respectively . The distance between P and Q id 600 km and the ratio of speeds of A is to B is 5:7. if they meet at a point M: find the distance PM.

The ratio between the speeds of two trains is 5:7. If the first train covers 300 km in 3 hours, then the speed (in km/h) of the second train is : दो ट्रेनों की चाल में 5 : 7 का अनुपात है | यदि पहली ट्रेन 300 किमी की दूरी 3 घंटे में तय करती है, तो दूसरी ट्रेन की चाल ( किमी/घंटा में ) कितनी है?

The ratio between the speeds of two trains is 5:7. If the first train covers 300 km in 3 hours, then the speed (in km/h) of the Second train is : दो ट्रेनों की चाल 5 : 7 के अनुपात में है | यदि पहली ट्रेन 300 किमी की दूरी 3 घंटे में तय करती है, तो पहली ट्रेन की चाल ( किमी/घंटा में ) कितनी है?

JEE Mains & Advanced | Chemistry - Ideal Gases By Vipin Sir | L1 English Medium

JEE Mains & Advanced | Chemistry - Ideal Gases By Vipin Sir | L2 English Medium