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Two resistances are connected in two gaps of a metre bridge. The balance point is 20 cm from the zero end. A resistance of 15 Ω is connected in series with the smaller of the two. The null point shifts to 40 cm. Then value of the smaller resistance Is:
20
Sep
Two resistances are connected in two gaps of a metre bridge. The balance point is 20 cm from the zero end. A resistance of 15 Ω is connected in series with the smaller of the two. The null point shifts to 40 cm. Then value of the smaller resistance Is: Two cells of emfs approximately [...]
A piece of brass ( alloy of copper and zinc) weighs 12.9 gram in air. When completely immersed in water it weighs 11.3 gram. What is the mass of copper contained in the alloy ? Specific gravities of copper and zinc are 8.9 and 7.1 respectively
20
Sep
A piece of brass ( alloy of copper and zinc) weighs 12.9 gram in air. When completely immersed in water it weighs 11.3 gram. What is the mass of copper contained in the alloy ? Specific gravities of copper and zinc are 8.9 and 7.1 respectively A hollow sphere of external radius R and thickness [...]
In the circuit shown, a meter bridge is in its balanced state. The meter bridge wire has a resistance .1ohm/cm. The value of unknown resistance X and the current drawn from the battery of negligible resistance is
20
Sep
In the circuit shown, a meter bridge is in its balanced state. The meter bridge wire has a resistance .1ohm/cm. The value of unknown resistance X and the current drawn from the battery of negligible resistance is a meter bridge is in its balanced state. The meter bridge wire has a resistance .1ohm/cm. The value [...]
In a meter bridge experiment null point is obtained at 20 cm. from one end of the wire when resistance X is balanced against another resistance Y. If XltY, then where will be the new position of the null point from the same end, if one deicdes to balance a resistance of 4 X against Y
20
Sep
In a meter bridge experiment null point is obtained at 20 cm. from one end of the wire when resistance X is balanced against another resistance Y. If XltY, then where will be the new position of the null point from the same end, if one deicdes to balance a resistance of 4 X against [...]
A hollow sphere of external radius R and thickness t
20
Sep
A hollow sphere of external radius R and thickness t A hollow sphere of external radius R and thickness t September 20, 2020 Category: Chapter 13 - Fluid Mechanics , MTG NEET Physics , Part 1 ,
Two cells of emfs approximately 5 V and 10 V are to be accurately compared using a poteniometer of length 400 cm.
20
Sep
Two cells of emfs approximately 5 V and 10 V are to be accurately compared using a poteniometer of length 400 cm. Two cells of emfs approximately 5 V and 10 V are to be accurately compared using a poteniometer of length 400 cm. September 20, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
In wheatstone bridge P = 9 ohm , Q = 11 ohm, R = 4 ohm and S = 6 ohm. How much resistance must be put in parallel to the resistance S to balance the bridge ?
20
Sep
In wheatstone bridge P = 9 ohm , Q = 11 ohm, R = 4 ohm and S = 6 ohm. How much resistance must be put in parallel to the resistance S to balance the bridge ? In wheatstone bridge P = 9 ohm Q = 11 ohm R = 4 ohm and S [...]
A rocket is fired ‘vertically’ from the surface of mars with a speed of 2 kms^−1. If 20% of its initial energy is lost due to martian atmospheric resistance, how far will the rocket go from the surface of mars before returning to it ? Mass of mars = 6.4×10^23 kg; radius of mars = 3395 km; G = 6.67 x 10^-11 Nm^2/kg^2.
20
Sep
A rocket is fired ‘vertically’ from the surface of mars with a speed of 2 kms^−1. If 20% of its initial energy is lost due to martian atmospheric resistance, how far will the rocket go from the surface of mars before returning to it ? Mass of mars = 6.4×10^23 kg; radius of mars = [...]
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A rocket is fired 'vertically' from the surface of mars with a speed of 2 kms^−1. If 20% of its initial energy is lost due to martian atmospheric resistance ,
how far will the rocket go from the surface of mars before returning to it ? Mass of mars = 6.4×10^23 kg; radius of mars = 3395 km; G = 6.67 x 10^-11 Nm^2/kg^2. ,
Figure shows a simple a potentiometer circuit for measuring a small emf produced by a thermocouple. The meter wire PQ has a resistance of 5Ω, and the driver cell has an emf of 2.00V. If a balance point is obtained 0.600 m along PQ when measuring an emf of 6.00 mV, what is the value of resistance R?
20
Sep
Figure shows a simple a potentiometer circuit for measuring a small emf produced by a thermocouple. The meter wire PQ has a resistance of 5Ω, and the driver cell has an emf of 2.00V. If a balance point is obtained 0.600 m along PQ when measuring an emf of 6.00 mV, what is the value [...]
Tags:
and the driver cell has an emf of 2.00V. If a balance point is obtained 0.600 m along PQ when measuring an emf of 6.00 mV ,
Figure shows a simple a potentiometer circuit for measuring a small emf produced by a thermocouple. The meter wire PQ has a resistance of 5Ω ,
what is the value of resistance R? ,
A space-ship is stationed on Mars. How much energy must be expended on the spaceship to rocket it out of the solar system ? Mass of the spaceship =1000kg, Mass of the sun = 2×10^30kg. Mass of the Mars =6.4×10^23kg, Radius of Mars =3395 km. Radius of the orbit Mars =2.28×10^8 km, G = 6.67 × 10^−11 Nm^2/kg^−2.
20
Sep
A space-ship is stationed on Mars. How much energy must be expended on the spaceship to rocket it out of the solar system ? Mass of the spaceship =1000kg, Mass of the sun = 2×10^30kg. Mass of the Mars =6.4×10^23kg, Radius of Mars =3395 km. Radius of the orbit Mars =2.28×10^8 km, G = 6.67 [...]
Tags:
A space-ship is stationed on Mars. How much energy must be expended on the spaceship to rocket it out of the solar system ? Mass of the spaceship =1000kg ,
G = 6.67 × 10^−11 Nm^2/kg^−2. ,
Mass of the sun = 2×10^30kg. Mass of the Mars =6.4×10^23kg ,
Radius of Mars =3395 km. Radius of the orbit Mars =2.28×10^8 km ,