A. weaken it
B. strengthen it
C. reverse its polarity
D. demagnetize it completely
A. momentum increases 4 times and K.E increases 2 times
B. momentum and K.E. remain same
C. momentum increases 2 times and K.E increases constant
D. momentum increases 2 times and K.E increases 4 time
A. chromatic aberration
B. spherical aberration
C. both spherical and chromatic
D. distortion
A. 10-4 sec
B. 10-5 sec
C. 10-3 sec
D. 10-8 sec
A. decay of radioactive element in the earth
B. compression of material in the earth
C. residual lost of the earth
D. all as said in A – B and C
A. Biology
B. Chemistry
C. Physics
D. All of these
A. more for a round edge
B. less for a round edge
C. more for a sharp edge
D. less for a sharp edge