ASSERTION : It is not possible for a system, unaided by an external agency to transfer heat from a body at lower temperature to another body at a higher temperature. REASON : According to Clausius statement, “No process is possible whose sole result is the transfer of heat from a cooled object to a hotter object.”
Correct!
Wrong!
ASSERTION : If the amplitude of a simple harmonic oscillator is doubled, its total energy also becomes doubled. REASON : The total energy is directly proportional to the amplitude of vibration of the harmonic oscillator.
Correct!
Wrong!
ASSERTION : When observer moves away from the source, the frequency of sound appears to decrease. REASON : The apparent frequency of sound depends on whether the observer is moving towards the source or away from the source.
Correct!
Wrong!
ASSERTION : If an electron and proton possessing same kinetic energy enter an electric field in a perpendicular direction, the path of the electron is more curved than that of the proton. REASON : Electron forms a larger curve due to its small mass.
Correct!
Wrong!
ASSERTION : If a dielectric is placed in external field then field inside dielectric will be less than applied field. REASON : Electric field will induce dipole moment opposite to field direction.
Correct!
Wrong!
ASSERTION : The coil of a heater is cut into two equal halves and only one of them is used into heater. The heater will now require half the time to produce the same amount of heat. REASON : The heat produced is directly proportional to square of current.
Correct!
Wrong!
ASSERTION : At neutral point, a compass needle point out in any arbitrary direction. REASON : Magnetic field of earth is balanced by field due to magnets at the neutral points.
Correct!
Wrong!
ASSERTION : Lenz’s law is an important consequence of the principle of conservation of energy. REASON : Induced e.m.f. opposes always the change in magnetic flux responsible for its production.
Correct!
Wrong!
ASSERTION : Faraday’s laws are consequences of conservation of energy. REASON : In a purely resistive A.C. circuit, the current lags behind the e.m.f.
Correct!
Wrong!
ASSERTION : The sun looks reddish at the time of sunrise and sunset because of dispersion of light. REASON : The wavelength of red colour is less than the wavelength of blue colour.
Correct!
Wrong!
