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The correct answer is D
A parallel plate capacitor is half-filled with a dielectric slab (K = 4). What is its effective capacitance, assuming plate separation d?
What is the main difference between alternating current (AC) and direct current (DC)? Â
The half-life of a radioactive substance is 10 days. The time in which only 1/8th of the original substance remains is:
What is the minimum escape velocity of rocket to be launched into space?
Which of the following is the principle behind the working of a hydraulic press? Â
A body is thrown vertically upward with a velocity of 20 m/s. What will be its velocity at the highest point? Â
What happens to the resistance of a wire if its length is doubled? Â
A train approaches a stationary observer with a speed of 36 km/h. It emits a sound of frequency 500 Hz. If the speed of sound is 340 m/s, what is the ap...
Which of the following is an alpha particle which is emitted in radioactivity?
A rod PQ of length 0.6 m moves on smooth rails with speed 3 m/s in a magnetic field B = 0.5 T. The rails form a closed circuit with 4 Ω resistance. Fin...
