What is the speed of a body vibrating at 50 cyclic per second?

5 years ago

A. 100 πrads−¹ B. 200 πrads−¹ C. 50 πrads−¹ D. 400 πrads−¹ Correct Answer: Option A - 100 πrads−¹ Explanation…

The instrument to measure the relative density of liquid is?

5 years ago

A. thermometer B. hydrometer C. spring balance D. beaker Correct Answer: Option B - hydrometer Explanation Thermometer is used to…

It is known that a neutron exists in a light atomic nucleus. Which of the following also exists in the nucleus?

5 years ago

A. An electron B. A β - particle C. β - particle D. proton Correct Answer: Option D - proton…

Which of the following surfaces will absorbs radiant heat energy heat?

5 years ago

A. white B. red C. black D. blue Correct Answer: Option C - black Explanation A black solution is a…

Which of the following is a semiconductor?

5 years ago

A. copper B. silicon C. plastic D. Iron Correct Answer: Option B - silicon Explanation Semi-conductor have an elecctric conductivity…

Which of the following is correct about an electric cell?

5 years ago

A. Primary cell produces a large current for a long time B. Secondary cell has a very high internal resistance…

I. Refraction II. Interference III. Diffraction Which of the properties are common to all waves?

5 years ago

A. II and III only B. I, II and III C. I and II only D. I and III only…

A constant force of 5N acts for a 5 seconds on a mass of 5kg initially at rest. Calculate the final momentum?

5 years ago

A. 125kgm/s¹ B. 25kgm/s¹ C. 15kgm/s¹ D. 0kgm/s¹ Correct Answer: Option B - 25kgm/s¹ Explanation Impulse = momentum Impulse =…

From the diagram below; calculate the energy stored in the capacitor?

5 years ago

A. 4.0 x 10−²J B. 4.0 x 10^−4J C. 8.0 x 10^−4J D. 8.0 x 10−² Correct Answer: Option B…

How can energy loss be minimized through Eddy-current?

5 years ago

A. By using high resistance wire B. By using insulated soft iron wires C. By using low resistance wires D.…