Chemistry-
General
Easy
Question
The radius of atom is of the order of......
- 10-10 cm
- 10-8 cm
- 10-15cm
- 10-13cm
The correct answer is: 10-8 cm
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There are 10 identical capacitors each of capacitance C
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. A battery is connected as shown in the figure
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Four capacitors and two batteries are connected as shown in the diagram. If Va and Vb denote the potentials of the points ‘a’ and ‘b’ then
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Physics-General
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A parallel plate capacitor of plate area A plate separation d is charged to potential difference V and then the battery is disconnected. A slab of dielectric constant K is then inserted between the plates of the capacitor so as to fill the space between the plates.If Q, E and W denotes respectively, the magnitude of charge on each plate, the electric field between the plates (after the slab is inserted), and work done on the system in the process of inserting the slab, then
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The potential difference between the points A and B and that between E and F of the circuit shown in figure respectively are:
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Physics-General
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Two parallel plate capacitors with area A are connected through a conducting spring of natural length l in series as shown. Plates P and S have fixed positions at separation d. Now the plates are connected by a battery of emf x as shown. If the extension in the spring in equilibrium is equal to the separation between the plates, find the spring constant k
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Physics-General
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A parallel plate capacitor C with plates of unit area and separation d is filled with a liquid of dieletric constant K 2 = .The level of liquid is d/3 initially. Suppose the liquid level decreases at a constant speed v, the time constant as a function of time t is
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Physics-General
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For the circuit shown, which of the following statement is true
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Physics-General
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A source is moving across a circle given by the equation 
in with constant speed 
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Observe O is ahead by L from source S which are moving along same line with velocities V0 and VS respectively. The speed of sound is V. The source emits a wave pulse that reaches the obsever in time t1
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Two pulses are emitted by sources at S and | S . What is the time lag by which observer observe them?
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At time t=T, the source reaches at | S . It is obvious that the observer will not be at O this time. The source emits a wavepulse at this time to reach the observer in time t2, which is measured from t=0
Two pulses are emitted by sources at S and | S . What is the time lag by which observer observe them?
Physics-General
