A. Zero
B. 2
C. 1
D. Not definite
A. Lags behind voltage by π/2
B. Is in phase with voltage
C. Opposite in phase of voltage by π
D. Leads forward the voltage by π/2
A. Indivisible
B. Divisible
C. Both
D. Non of these
A. It will remain under the water, when it will displace more water than its weight
B. the density of needle is less than that of water
C. due to surface tension
D. due to its shape
A. Flow rate
B. Volume of fluid
C. Mass of fluid
D. The density of the fluid
A. an apparent increase in frequency
B. an apparent decrease in frequency
C. an apparent decrease in wavelength
D. no apparent change in frequency
A. 1.44kw/m2
B. 1.4kw/m2
C. 1 kw/m2
D. none