Which of the following cannot be used to measure the temperature of a substance?
A. variation of pressure with temperature B. expansivity of a liquid C. change in resistance of a conductor D. thermometric effect E. change in color with temperature Correct Answer: Option E – change in color with...
Which of the following statements about the gaseous state of matter is not correct? The molecules of a substance is in gaseous state
A. is in a constant state of motion B. have different speed C. have a temperature which is an average measure of the kinetic energy D. have no intermolecular attractive force E. has a pressure which is determined by the number of molecules present Correct Answer:...
The motion of a body is simple harmonic if the?
A. Acceleration is always directed towards a fixed point B. path of motion is a straight line C. Acceleration is directed towards a fixed point and proportional to its distance from the point D. Acceleration is proportional to the square of the distance from a fixed...
Which of the following correctly gives the relationship between linear speed V and angular speed ω of a body moving uniformly in a circle of radius r?
A. V = ωr B. V = ω²r C. V = ωr² D. V² = ωr E. V = ω/r Correct Answer: Option A = V = ωr
A ball is thrown vertically upwards from the ground with an initial velocity of 50ms−¹. What is the total time spent by the ball in the air? (g = 10ms−²)
A. 2.5s B. 5.0s C. 10.0s D. 15.0s E. 20.0s Correct Answer: Option C = 10.0s Explanation Time to move up: V = U – gt 0 = 50 – 10t t = 5. Total time spent on air = 2t =...Products
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