64.0J
80.0J
128.0J
160.0J
Correct answer is A
E = \(\frac{1}{2}Ke^2\)
= \(\frac{1}{2} \times 200(0.8)^2 = 64J\)
i and ii only
ii and iii only
i and iii only
i, ii and iii
Correct answer is D
No explanation has been provided for this answer.
increased the surface tension of the water
reduces the density of the water
reduces the surface tension of the water
reduces the upthrust on the needle
Correct answer is C
No explanation has been provided for this answer.
6.20 x 104 pa
1.02 x 105 pa
1.54 x 105 pa
5.20 x 105 pa
Correct answer is C
P = hpg + A.P
= 5.2 x 1000 x 10 + 1.02 x 105
= 1.54 x 105
Which of the following concept is not an evidence of the particle nature of matter?
diffusion
brownian motion
diffraction
crystallization
Correct answer is D
No explanation has been provided for this answer.