Which of the following concepts is not an evidence of the particles nature of matter?

5 years ago

A. Diffusion B. Brownian motion C. Diffraction D. Crystallization Correct Answer: Option D - Crystallization Explanation Diffusion is the net…

The product of force and time is?

5 years ago

A. Impulse B. Momentum C. Inertia D. Friction Correct Answer: Option A - Impulse Explanation An impulse is equal to…

Temperature is the property of a body which is proportional to the?

5 years ago

A. total kinetic energy of its molecules B. average kinetic energy of its molecules C. average speed of its molecules…

What flows to the earth by connecting the conductor to the earth?

5 years ago

A. Electrons B. Ion C. Neutron D. Proton Correct Answer: Option A - Electrons Explanation Ion: an atom with a…

The resistance of a 40W car headlamp; drawing current from a 12V battery is?

5 years ago

A. 0.3Ω B. 3.3Ω C. 3.6Ω D. 4.8Ω Correct Answer: Option C - 3.6Ω Explanation Power delivered to headlamp =…

A force of 5N acts at a point Y on a rod XYZ as shown in this diagram. If XYZ is 2m; what is the moment of the force about point X?

5 years ago

A. 0Nm B. 3Nm C. 7Nm D. 10Nm Correct Answer: Option D - 10Nm Explanation Moment = Force × Distance…

The energy needed to move a unit positive charge around a complete electric circuit is called the?

5 years ago

A. electromotive force B. electric potential difference C. electric energy D. kinetic energy Correct Answer: Option B - electric potential…

An object is placed 20cm from a concave mirror of focal length 10cm. The linear magnification of the image produced is?

5 years ago

A. 0 B. 12 C. 1 D. 2 Correct Answer: Option C = 1 Explanation I/V = 1/f – 1/u…