Related InterviewSolutions

• A particle moves along a curve of unknown shape but magnitude of force `F` is constant and always acts along tangent to the curve.ThenA. `F` may be conservativeB. `F` must be conservativeC. `F` may be non conservativeD. `F` must be non-conservative
• Which of the following velocity-time graphs shows a realistic situation for a body in motion ?A. B. C. D.
• As shown in figure in a simple barmonic motion obscillator having identical four springs has time period A. `T = 2 pi sqrt((m)/(4 k))`B. `T = 2 pi sqrt((m)/(2 k))`C. `T = 2 pi sqrt((m)/( k))`D. `T = 2 pi sqrt((m)/(8 k))`
• Assertion: The error in the measurement of radius of sphere is `0.3%`. The permissible error in its surface area is `0.6 %`. Reason: The permissible error is calculated by the formula `(Delta A)/(A) = (4 Delta r)/( r)`.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true but reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.
• The dimension of torqueA. `[ML^(2)T^(-3)]`B. `[ML^(-1)T^(1)]`C. `[ML^(2)T^(-2)]`D. `[MT^(-2)]`
• Assertion: The change in air pressure effects the speed of sound. Reason: The speed of sound in gases is alphaortional to the square of pressure.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true but reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.
• A gun fires a bullet of mass `50 g` with a velociy of `30 m//s`. Due to this, the gun is pushed back with a velocity of `1 m//s`, then the mass of the gun is :A. `1.5 kg`B. `5.5 kg`C. `0.5 kg`D. `3.5 kg`
• Dimension of resistance in an elecatrical circuit, in terms of dimension of mass `M`, of length `L`, of time `T`, and of current `I`, would beA. `[ML^(2)T^(3)I^(-I)]`B. `[ML^(2)T^(2)]`C. `[ML^(2)L^(-1)]`D. `[ML^(2)T^(3)]`
• Assertion: In taking into account the fact that any object which floats must have an average density less than that of water, during World war `I`, a number of cargo vessels are made of concrete. Reason : Conctere cargo Vessel were filled with air.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. If both assertion and reason are true but reason is not the correct explanation of assertionC. If assertion is true but reason is false.D. If both aseertion and reason are false.
• A spherical drop of water has `1mm` radius. If the surface tension of water is `70xx10^(-3)`N//m, then the difference of pressure between inside and outside of the spherical drop is:A. `140 N//m^(2)`B. `14 N//m^(2)`C. `35 N//M^(2)`D. None of the above