Physics-
General
Easy
Question
STATEMENT – 1 :speed of sound in air was found wrong because, he assumed process as isothermal. Because
STATEMENT – 2 : Flow of sound wave in a medium is very fast. Quick process suppress heat exchange, hence this process must be adiabatic in nature
- Statement – 1 is True, Statement – 2 is True; Statement – 2 is a correct explanation for Statement – 1
- Statement – 1 is True, Statement – 2 is True; Statement – 2 is NOT a correct explanation for Statement – 1
- Statement – 1 is True, Statement – 2 is False
- Statement – 1 is False, Statement – 2 is True
The correct answer is: Statement – 1 is True, Statement – 2 is True; Statement – 2 is a correct explanation for Statement – 1
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STATEMENT – 1 : The velocity of sound in air, at constant temperature, does not depend on the ambient pressure. Because
STATEMENT – 2 : This is a consequence of the fact that the velocity of sound is a function of the ratio p/p but as P increases, 
increases by the same factor at constant temperature
STATEMENT – 1 : The velocity of sound in air, at constant temperature, does not depend on the ambient pressure. Because
STATEMENT – 2 : This is a consequence of the fact that the velocity of sound is a function of the ratio p/p but as P increases, increases by the same factor at constant temperature
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STATEMENT – 1 : The basic of Laplace correction was the exchange of heat between the region of compression and rarefaction in air is not possible. Because
STATEMENT – 2 : Air is a bad conductor of heat and velocity of sound in air is large
STATEMENT – 1 : The basic of Laplace correction was the exchange of heat between the region of compression and rarefaction in air is not possible. Because
STATEMENT – 2 : Air is a bad conductor of heat and velocity of sound in air is large
Physics-General
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Four wires each of length 2.0 metres are bent into four loops P, Q, R and S and then suspended into uniform magnetic field. Same current is passed in each loop. Which statement is correct
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A circular coil of radius 4 cm and of 20 turns carries a current of 3 amperes. It is placed in a magnetic field of intensity of 0.5 weber/m2 The magnetic dipole moment of the coil is
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Physics-General
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A proton (mass = 1.67×10–27kg and charge = 1.6×10–19C) enters perpendicular to a magnetic field of intensity 2 weber/m2 with a velocity 3.4×107 m/sec. The acceleration of the proton should be
A proton (mass = 1.67×10–27kg and charge = 1.6×10–19C) enters perpendicular to a magnetic field of intensity 2 weber/m2 with a velocity 3.4×107 m/sec. The acceleration of the proton should be
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In the figure, what is the magnetic field at the point O
In the figure, what is the magnetic field at the point O
Physics-General
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A long straight wire carries a current of p amp. The magnetic field due to it will be 5×10–5 weber/m2 at what distance from the wire [
= permeability of air]
A long straight wire carries a current of p amp. The magnetic field due to it will be 5×10–5 weber/m2 at what distance from the wire [ = permeability of air]
Physics-General
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A uniform wire is bent in the form of a circle of radius R. A current I enters at A and leaves at C as shown in the figure : If the length ABC is half of the length ADC, the magnetic field at the centre O will be
A uniform wire is bent in the form of a circle of radius R. A current I enters at A and leaves at C as shown in the figure : If the length ABC is half of the length ADC, the magnetic field at the centre O will be
Physics-General
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A particle carrying a charge equal to 100 times the charge on an electron is rotating per second in a circular path of radius 0.8 metre. The value of the magnetic field produced at the centre will be ( = permeability for vacuum)
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Physics-General
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An infinitely long straight conductor is bent into the shape as shown in the figure. It carries a current of i ampere and the radius of the circular loop is r metre. Then the magnetic induction at its centre will be
An infinitely long straight conductor is bent into the shape as shown in the figure. It carries a current of i ampere and the radius of the circular loop is r metre. Then the magnetic induction at its centre will be
Physics-General
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A length L of wire carries a steady current /. It is bent first to form a circular plane coil of one turn. The same length is now bent more sharply to give a double loop of smaller radius. The magnetic field at the centre caused by the same current is
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Physics-General
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Assertion : The height attained by a projectile is twenty five percent of range, when projected for maximum range.
Reason : The height is independent of initial velocity of projectile.
Assertion : The height attained by a projectile is twenty five percent of range, when projected for maximum range.
Reason : The height is independent of initial velocity of projectile.
Physics-General
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A cricket ball is hit at 30
with the horizontal with kinetic energy K. The kinetic energy at the highest point is :
A cricket ball is hit at 30 with the horizontal with kinetic energy K. The kinetic energy at the highest point is :
Physics-General
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A small body of mass m slides down from the the top of a hemisphere of radius r. The surface of block and hemisphere are frictionless. The height at which the body lose contact with the surface of the sphere is :
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Physics-General
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A particle is moving on a circular path of radius r with uniform velocity null. The change in velocity when the particle moves from P to Q is null :
A particle is moving on a circular path of radius r with uniform velocity null. The change in velocity when the particle moves from P to Q is null :
Physics-General
