1.

Match the column - with column-ll and mark the appropriate choiceColumn-1Column-11(A) To measure mass(P) Doppler's effect of light(B) To measure time(Q Law of gravitation and spectrometer(C) To measure distance(R) Caesium clock(D) To measure speed of star (S) RADAR and SONAROA-Q, B-R, C-S, D-Po A- PQ, B- QR, C- PQR, D-So A-Q, B-R, C-P. D-SKi

Answer»

10 11G 1H 3H 3h4v5h

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