JEE 2021 | समतल में गति - L2 | speed in plane | Hindi Medium | Ravikant Sir | 7PM

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

Two transparent media A and B are separated by a plane boundary. The speed of light in medium A is 2.0xx10^(8)ms^(-1) and in medium B is 2.5xx10^(8)ms^(-1) . The critical angle for which a ray of light going from A to B suffers total internal reflection is

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?

Lines L_(1):(x-6)/3=(y-4)/2=z-2 and L_(2):(x-8)/4=y-2=(z-4)/2 meets the plane pi:vecr(2hati+hatj-hatk)=7 at points A and B (1) Equation of line joining the images of the point of intersection of L_(1) & L_(2) with respect to the plane pi and the line AB is

Consider the lines L_(1):(x-1)/(2)=(y)/(-1)=(z+3)/(1),L_(2):(x-4)/(1)=(y+3)/(1)=(z+3)/(2) and the planes P_(1):7x+y+2z=3," "P_(2):3x+5y-6z=4. Let ax+by+cz=d the equation of the plane passing through the point of intersection of lines L_(1) and L_(2) and perpendicualr to planes P_(1) and P_(2) . Match List I with List II and select the correct answer using the code given below the lists.

A disc of the moment of inertia 'l_(1)' is rotating in horizontal plane about an axis passing through a centre and perpendicular to its plane with constant angular speed 'omega_(1)' . Another disc of moment of inertia 'I_(2)' . having zero angular speed is placed discs are rotating disc. Now, both the discs are rotating with constant angular speed 'omega_(2)' . The energy lost by the initial rotating disc is

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

JEE Mains & Advanced | Chemistry - Ideal Gases By Vipin Sir | L3 English Medium