Total number of series in hydrogen spectrum is_____________?
Total number of series in hydrogen spectrum is_____________?
A. three
B. four
C. five
D. six
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A body is moving with uniform velocity. Its______________________?
A body is moving with uniform velocity. Its______________________?A. speed changes
B. acceleration changes
C. direction of motion changes
D. displacement from origin changesTaking off rocket can be explained by __________________?
Taking off rocket can be explained by __________________?A. 1st law of motion
B. 2nd law of motion
C. Law of conservation of momentum
D. law of conservation of energyWhen car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to__________________?
When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to__________________?A. Centripetal force
B. Gravitational force
C. Their inertia
D. Centrifugal forceWhich one is venturi relation ?
Which one is venturi relation ?A. P1 – P2 = 1/2 ρV22
B. V2 = 2g (h1-h2)
C. P = 1 /2ρV2 = ρgh = constant
D. A1 V1 = A2 V2 = constantWhen velocity time graph is a straight line parallel to time axis then__________________?
When velocity time graph is a straight line parallel to time axis then__________________?A. acceleration is const
B. acceleration is variable
C. acceleration is zero
D. velocity is zeroStudy of living science relates with________?
Study of living science relates with________?A. Physical science
B. Biological science
C. Just living science
D. Organ science