physics

The action of blotting paper on ink is due to?

A. diffusion B. osmosis C. capillarity D. surface tension Correct Answer: Option C - capillarity Explanation Capillarity is the tendency…

5 years ago

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

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

5 years ago

The instrument to measure the relative density of liquid is?

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

5 years ago

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

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

5 years ago

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

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

5 years ago

Which of the following is a semiconductor?

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

5 years ago

Which of the following is correct about an electric cell?

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

5 years ago

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

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

5 years ago

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

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

5 years ago

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

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…

5 years ago