physics

In the molecular explanation, heat is transferred by the?

A. free electrons B. free atoms C. free molecules D. free solids Correct Answer: Option A A. free electrons Explanation…

6 years ago

The volume of 0.354g of helium at 273°C and 114cm of mercury pressure is 2667cm3. Calculate the volume?

A. 2000.25 cm³ B. 200.025 cm³ C. 4003.27 cm³ D. 2010.25 cm³ Correct Answer: Option B Explanation m = 0.354g,…

6 years ago

When two objects A and B are supplied with the same quantity of heat, the temperature change in A is obtained to be twice that of B. The mass of P is half that of Q. The ratio of the specific heat capacity of A to B is

A. 1 : 4 B. 4 : 1 C. 1 : 1 D. 2 : 1 Correct Answer: Option C…

6 years ago

What are the units of latent heat?

The following are some units I. Ns II. Non III. Nm‾² IV. J°K‾¹ V. JKj‾¹ A. I B. II C.…

6 years ago

A boy pushes a 500kg box along a floor with a force of 2000N. If the velocity of the box is uniform, the co-efficient of friction between the box and the floor is?

A. 1 A. 0.8 C. 0.65 D. 0.4 Correct Answer: Option D D. 0.4

6 years ago

A coil X is moved quickly away from the end Y of a stationary metal bar and a current then flows in X as shown above. Then

A. the bar is not a magnet B. Y is a north pole C. Y is a South pole D.…

6 years ago

If a body moves with a constant speed and at the same time undergoes an acceleration, its motion is said to be?

A. circular B. oscillatory C. rectilinear D. rotational Correct Answer: Option A A. circular

6 years ago

The lower fixed part of a faulty thermometer reads 2°C while the upper fixed point is 100°C. What is the true temperature when the thermometer reads 51°C?

A. 52°C B. 50°C C. 49°C D. 46°C Correct Answer: Option B B. 50°C

6 years ago

The resultant capacitance in the figure above is?

A. 0.4μf B. 0.8μf C. 1.8μf D. 4.5μf Correct Answer: Option B Explanation For the parallel arrangement = 2 +…

6 years ago

The point at which the molecules of a loaded wire begin to slide across each other resulting in a rapid increase in extension is?

A. yield point B. proportionality point C. deformation point D. elastic point Correct Answer: Option A A. yield point Explanation…

6 years ago
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