Related InterviewSolutions

• The equation of a sound wave is `y=0.0015sin(62.4x+316t)` the wavelength of this wave isA. 0.2 unitB. 0.1 unitC. 0.3 unitD. None of these
• If the temperature increases, then what happens to the frequency of the sound produced by the organ pipe ?A. unchangedB. decreasesC. increasesD. not definite
• In a resonance tube the first resonance with a tuning fork occurs at 16 cm and second at 49 cm . If the velocity of sound is 330 m/s , the frequency of tuning fork isA. 500B. 300C. 330D. 165
• The differential equation whose solution is `(x-h)^2+ (y-k)^2=a^2` is (a is a constant)A. `[1+((dy)/(dx))^(2)]^(3)=a^(2)(d^(2)y)/(dx^(2))`B. `[1+((dy)/(dx))^(2)]^(3)=a^(2)((d^(2)y)/(dx^(2)))^(2)`C. `[1+((dy)/(dx))]^(3)=a^(2)((d^(2)y)/(dx^(2)))^(2)`D. None of the above
• Find the differential equation of all the circleswhich pass through the origin and whose centres lie on y-axis.A. `(x^(2)-y^(2))(dy)/(dx)-2xy=0`B. `(x^(2)-y^(2))(dy)/(dx)+2xy=0`C. `(x^(2)-y^(2))(dy)/(dx)-xy=0`D. `(x^(2)-y^(2))(dy)/(dx)+xy=0`
• From point `P(8,27)` tangents PQ and PR are drawn to the ellipse `(x^(2))/(4)+(y^(2))/(9)=1.` Then, angle subtended by QR at origin isA. `tan ^(-1)""(2sqrt6)/(65)`B. `tan ^(-1)""(4sqrt6)/(65)`C. `tan^(-1)""(8sqrt2)/(65)`D. None of these
• In the following sequence of reactions `CH-underset(NH_(2))underset(|)(CH)-CH_(3)overset(HNO_(3))toAoverset("Oxidation")toBunderset((ii)H^(+)//H_(2)O)overset((i)CH_(3)MgI)toC` The compound C formed will beA. butanol-1B. butanol-2C. 2-methyl propanol-1D. 1, 1-dimethyletanol
• The equation of the common tangents to the circle`(x-3)^(2)+y^(2)=9` and the parabola `y^(2)=4ax` the x-axis, isA. `sqrt2y=3x+1`B. `sqrt3y=-(x+3)`C. `sqrt3y=x+3`D. `sqrt3y=-(3x+1)`
• The most common oxidation states of cerium areA. `+2,+4`B. `+3,+4`C. `+3,+5`D. `+2,+3`
• In a sim,le slit differection pattern intensisty and width of fringes areA. unequal widthB. equal widthC. equal width and equal intensityD. unequal width and unequal intensity