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NCERT Maths (6 – 12) Video Solutions
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A multirange voltmeter can be constructed by using a galvanometer circuit as shown in Fig. 4.2. We want to construct a voltmeter that can measure 2V, 20V and 200V using a galvanometer of resistance 10Ω and that produces maximum deflection for current of 1 mA. Find R1, R2 and R3 that have to be used.
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NEET Last 32 Years Phy and Chem Video Solutions
AIIMS Last 24 Years Phy and Chem Video Solutions
JEE Mains 2002-19 Phy Video Solutions
JEE Mains and Adv Chem Last 41 Years Video Solutions
The concentration of hydrogen ions in a 0.2 M solution of formic acid is 6.4×10^−3 mol L^−1. To this solution, sodium formate is added so as to adjust the concentration of sodium formate to 1 mol L^−1. What will be the pH of this solution? The dissociation constant of formic acid is 2.4×10^−4 and the degree of dissociation of sodium formate is 0.75.
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Cengage NEET Physics by CP Singh Full Video Solutions
A proton goes undeflected in a crossed electric and magnetic field (the fields are perpendicular to each other) at a speed of 2.0 x 10^5m/s. The velocity is perpendicular to both the fields. When the electric field is switched off, the proton moves along a circle ol radius 4.0cm. Find the magnitudes of the electric and the magnetic fields. Take the mass of the proton = 1.6 x 10^-27kg.
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Cengage JEE Mains Physics by BM Sharma Full Video Solutions
One mole of an ideal gas at pressure P0 and temperature T0 is expanded isothermally to twice its volume and then compressed at constant pressure to (V0/2) and the gas is brought back to original state by a process in which P alpha V ( pressure is directly proportional to volume ). The correct temperature of the process is
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Arihant NEET+JEE Physics by DC Pandey Full Video Solutions
wo identical vessels A and B contain masses m and 2m of same gas. The gases in the vessels are heated keeping their volumes constant and equal. The temperature-pressure curve for mass 2m makes angle alpha with T-axis and that and for mass m makes an angle beta with T-axis then
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A uniform metallic disc of radius r and mass m is spinning with angular speed omega_(0) about an axis passing through its centre and perpendicular to plane. If its temperature is increased (slightly) by DeltaT its new angular speed is (The coefficient of linear expansion of the metal is alpha)
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MTG NEET Physics Full Video Solutions
N. Awasthi Physical Chem (JEE+NEET) Full Video Solutions
For any acid catalysed reaction, AH+→B. half- life period is independent of concentration of A at given pH. At definite concentration of A half- time is 10min at pH = 2 and half- time is 100 min at pH = 3. If the rate law expression of reaction is r = k[A]^x[H+]^y then calculate the value of (x + y).
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