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For a pear-shaped conductor shown below; the concentration of charge on the outside is highest at?

A. X B. Z C. Y D. K Correct Answer: Option A = X Explanation The electric field at the…

3 years ago

Which of these is not a second class lever?

A. sugar tongs B. claw hammer C. plier D. wheelbarrow Correct Answer: Option C - wheelbarrow Explanation Examples of first…

3 years ago

A current of 0.5 A flows through a resistor when connected to a 40 V battery. How much energy is dispatched in 2 minutes?

A. 2400 J B. 9600 J C. 1500 J D. 1200 J Correct Answer: Option A = 2400 J Explanation…

3 years ago

According to kinetic molecular model in gases?

A. the particles are closely packed together; they occupy minimum space are usually arranged in a regular pattern B. the…

3 years ago

A magnet relay is a device used for?

A. reading the magnitude of magnetic flux B. controlling another circuit carrying a larger current C. turning in sports D.…

3 years ago

When the plate area of a capacitor increases?

A. the voltage can withstand increase B. the capacitance decreases C. the capacitance is unaffected D. the capacitance increases Correct…

3 years ago

A person standing waist-deep in a swimming pool appears to have short legs because of light?

A. diffraction B. refraction C. reflection D. interference Correct Answer: Option B - refraction Explanation The refractive index of water…

3 years ago

A tuning fork having a frequency of 312 Hz emits a wave which has a wavelength of 1.10 m. Calculate the velocity of sound

A. 312.0 ms−1 B. 110.0 ms−1 C. 343.2 ms−1 D. 686.4 ms−1 Correct Answer: Option C = 343.2 ms−1 Explanation…

3 years ago

The secondary pigments consist of?

A. blue, green, and violet B. yellow, green, and magenta C. magenta, yellow, and cyan D. red, green, and blue…

3 years ago

An isotope has an initial activity of 120 Bq. 6 days later its activity is 15 Bq. The half-life is?

A. 3 days B. 2 days C. 1 day D. 4 days Correct Answer: Option A = 3 days

3 years ago