Justify `L + L = L`and `L-L =L`

L1-L3

L1-L4

The bar chart represents number of fiction and non-fiction books in four libraries L_1 , L_2 , L_3 and L_4 comsider the bar chart and answer questions based on it. The ratio of total books of libraries L_1 and L_3 to L_2 and L_4 is

Five balls L1, L2, L3, L4 and L5 are kept one above the other (not necessarily in the same order). L1 is just above L5 and just below L4. L2 is just above L3 and just below L5. How many balls are above L2? पांच गेंदों L1, L2, L3, L4 और L5 को एक के ऊपर एक रखा जाता है (जरूरी नहीं कि उसी क्रम में)। L1, L5 के ठीक ऊपर और L4 के ठीक नीचे है। L2, L3 के ठीक ऊपर और L5 के ठीक नीचे है। L2 के ऊपर कितनी गेंदें हैं?

In figure, sides L M and L N of L M N are extended to P and Q respectively. If x > y , show that L M > L N .

Is the relation R={(L_1, L_2) : L_1,L_2 in L} and L_1 is perpendicular on L_2 an equivalence relation in the set L of all straight lines in the coordinate plane?

Consider atoms H, He^(+), Li^(++) in their ground states. If L_(1), L_(2) and L_(3) are magnitude of angular momentum of their electrons about the nucleus respectively then: A. L_(1)=L_(2)=L_(3) B. L_(1) gt L_(2) gt L_(3) C. L_(1) lt L_(2) lt L_(3) D. L_(1)=L_(2)=L_(3)

Three energy levels L_1,L_2 and L_3 of a hydrogen atom correspond to increasing values of energy i.e., E_(L_1) lt E_(L_2) lt E_(L_3) . If the wavelength corresponding to the transitions L_3 to L_2, L_2 to L_1 and L_3 to L_1 are lambda_3, lambda_2 and lambda_1 respectively then