physics

One end of a long wire is fixed while a vibrator is attached to the other end. When the vibrator is energized, the types of waves generated in the wire are?

A. stationary and longitudinal B. stationary and transverse C. progressive and transverse D. progressive and longitudinal Correct Answer: Option A…

4 years ago

A thin wire with heavy weights attached to both ends is hung over a block of ice resting on two supports. If the wire cuts through the ice block while the block remains solid behind the wire, the process is called?

A. condensation B. sublimation C. regelation D. fusion Correct Answer: Option C - regelation

4 years ago

A boy observes a piece of stone at the bottom of a river 6.0m deep. If he looks from the surface of the river. What is the apparent distance of the stone from him? [Refractive Index of Water = 4/3]

A. 8.0m B. 5.5m C. 5.0m D. 4.5m Correct Answer: Option D = 4.5m Explanation Refractive Index = Real Depth/App.…

4 years ago

Which of the conditions below are necessary to produce interference fringes?

I. Coherence II. Same frequency III. Same wavelength IV. Same Intensity A. I and III B. I, II and IV…

4 years ago

A quantity of water at 0°C is heated to about 30°C. At each degree rise in temperature, its density will?

A. rise steadily B. fall steadily C. fall then rise D. rise then fall Correct Answer: Option D - rise…

4 years ago

Total internal reflection occurs when light moves from?

A. a dense medium to a less dense medium B. air to water C. water to glass D. a less…

4 years ago

Which combination of the above is true of sliding friction?

I. The frictional force is independent of the area of the surfaces in conduct II. The frictional force depends on…

4 years ago

A rope is being used to pull a mass of 10kg vertically upward. Determine the tension in the rope if starting from rest; the mass acquires a velocity of 4ms‾¹ in 8s [g = 10ms−²2]

A. 5N B. 50N C. 95N D. 105N Correct Answer: Option D - 105N Explanation Tension = Force of gravity…

4 years ago

A stream is flowing at 0.75ms‾¹ and a boat heading perpendicular for the stream landed at the opposite bank at an angle of 30°. Calculate the velocity of the boat.

A. 1.50ms‾¹ B. 1.00ms‾¹ C. 0.86ms‾¹ D. 0.65ms‾¹ Correct Answer: Option C - 0.86ms‾¹ Explanation Let the velocity of the…

4 years ago

A catapult used to hold a stone of mass 500g is extended by 20cm with an applied force F. If the stone leaves with a velocity of 40m/s, the value of F is?

A. 4.0 x 102N B. 2.0 x 103N C. 4.0 x 103N D. 4.0 x 104N Correct Answer: Option C…

4 years ago
Show more Posts
Show previous Posts