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If The Distance S Travelled By A Particle In Time T Is S A Sin T B Cos 2t

1) a 2) – a 3) 4b 4) – 4b Solution: (4) – 4b s = a sin t + b cos 2t ds / dt = a cost - 2b (sin 2t) d2s / dt2 = - a sint - 4b cos... View Article

If The Edge Of A Cube Increases At The Rate Of 60 Cm Per Second At What Rate The

1) 48600 cu cm per sec 2) 1458000 cu cm per sec 3) 4374000 cu cm per sec 4) None of the above Solution: (2) 1458000 cu cm per sec... View Article

A Ladder Is Resting With The Wall At An Angle Of 30 Degrees A Man Is Ascending

1) 3 ft/sec 2) (3 / 2) ft/sec 3) (2 / 4) ft/sec 4) (3 / √2) ft/sec Solution: (2) (3 / 2) ft/sec The rate of approaching the wall... View Article

If By Dropping A Stone In A Quiet Lake A Wave Moves In Circle At A Speed

1) 220 sq. cm/sec 2) 110 sq. cm/sec 3) 35 sq. cm/sec 4) 350 sq. cm/sec Solution: (1) 220 sq. cm/sec dr / dt = 3.5 cm/sec r = 10... View Article

A Rectangle Of Perimeter 24 Inches Is Rotated About One Of Its Sides So As To Form A Cylinder

1) 8, 4 2) 4, 4 3) 8, 8 4) None of these Solution: (1) 8, 4 V = πx2y given x + y = 12 V = πx2 (12 - x) V = 12πx2 - πx3 dV /... View Article

Water Is Flowing Into A Vertical Cylindrical Tank Of Radius 2ft At The Rate Of 8 Cubic Ft

1) π / 2 2) 2 / π 3) 2 4) None of these Solution: (2) 2 / π V = πr2h = 4πh dV / dt = 4π (dh / dt) (dh / dt) = (1 / 4π) (dV / dt)... View Article

If The Distance Travelled By A Point In Time T Is S 180t 16 T 2 Then The Rate

1) – 16 t unit 2) 48 unit 3) – 32 unit 4) None of these Solution: (3) – 32 unit s = 180t – 16 t2 ds / dt = 180 - 32t d2s / dt2... View Article

A Particle Is Moving In A Straight Line Its Displacement At Time T Is Given By

1) –2, –5 2) 2, 6 3) –2, 8 4) 2, 8 Solution: (1) –2, –5 Displacement s = - 4t2 + 2t Now velocity v = - 8t + 2 and its... View Article

Two Automobiles Start From A Point A At The Same Time One Travels Towards The West

1) 5√193 2) √193 3) 5 / √193 4) None of these Solution: (1) 5√193 At time t hours, the distance d is d2 = (60t)2 + (35t)2 When... View Article

Radius Of A Circle Is Increasing Uniformly At The Rate Of 3 Cm Sec

1) π cm2/s 2) 2π cm2/s 3) 10π cm2/s 4) None of these Solution: (4) None of these Let r be the radius of the circle. Rate of... View Article

A Ball Thrown Vertically Upwards Falls Back On The Ground After 6 Seconds

1) 0 m/s 2) 1 m/s 3) 29.4 m/s 4) None of these Solution: (3) 29.4 m/s Velocity of ball (v) = ds / dt = u - 9.8t Here terminal... View Article

How Does Temperature Affect The Kinetic Energy Of Particles

With the increase in temperature the kinetic energy of the particles increases and starts moving faster. The kinetic energy of the particles is... View Article

What Is Vapour Pressure And What Causes It

Vapour pressure is the measure of the tendency of the liquid to change into a vapour. The vapour pressure is caused by evaporation of the liquid.... View Article

What Is The Pauli Exclusion Principle

According to Pauli’s exclusion principle, no two electrons in the same atom can have the same value for all the four quantum numbers. In other... View Article

Are Vapour Pressure And Saturation Pressure The Same

Vapour pressure and saturation pressure is the same. Saturation pressure is defined as the temperature at which the liquids start to boil at the... View Article

Does Voltmeter Have Positive And Negative Terminals

A voltmeter has positive and negative terminals. The positive input terminal is usually red and the negative terminal is black.... View Article

Does Voltmeter Measure Emf

An ideal voltmeter cannot measure the electromotive force of the cell. Current flows from higher potential to lower potential in an electric... View Article

Does Boiling Point Increase With The Vapour Pressure

No, the boiling point does not increase with the increase in the vapour pressure. The vapour pressure of the liquid reduces the atmospheric... View Article

Is Sulfur A Conductor

Sulfur is a poor conductor of electricity and heat. It does not have any free electrons, the electrons in sulfur are tightly held and cannot move... View Article

Which Best Describes The First Law Of Thermodynamics

Which best describes the first law of thermodynamics? Energy can neither be created nor destroyed, but it can change into matter Energy can... View Article