A beaker containing water is kept on a spring scale. The mass of water and beaker is 5 kg . A block of mass 2 kg and specific gravity 10 is suspended by means of thread from a spring balance as shown. The readings of scales `S_(1) " and " S_(2)` are respectively Take, `g=10 ms^(-2)`

Options

A. 52 N and 20 N
B. 50 N and 18 N
C. 52 N and 18 N
D. 52 N and 22 N

Answer

C

Explanation

Upthrust `=(2)/(10)xx1xx10=2N`
Reading of `S_(1)` will increase by 2N i.e., if will become 50+2=52 N while that of `S_(2)` will decrease by 2N i.e., 20-2=18 N