Which of the following pairs of quantities are both derived?

In which of the following does streamlining not apply?

A car travels at an average speed 110 kmh. What distance does it cover in 12 minutes?

A body with an initial velocity u, accelerates non-uniformly to attain a velocity v after a time t. Which of the following velocity time graphs represents its motion?

A force of 20 N is applied to a block of wood at an angle of 35° to the horizontal. Calculate its vertical component.

A car moved from point A with a velocity u and its velocity doubled when it reached point B. If the distance between A and B is d, which of the following expressions represents the magnitude of its acceleration?

Two men of weights 500 N and 750N sat at the ends of a 4 m long sea-saw. If the sea-saw balanced horizontally, calculate the distance of the pivot from the 500 N man.

On which of the triangular plates, of weight W, represented below is the centre of gravity correctly located?

The path of a projectile is

A spring makes 40 oscillations in 15 s, calculate its angular velocity. [π =3.14]

A ball of mass 7 kg falls from a height of 120 m. Calculate its kinetic energy after falling through a distance of 70 m. [g=10 ms⁻²]

Which of the following sets comprises first, second and third order levers respectively?

Nuclear energy is classified as non-renewable energy resource because

A 4 kg gun placed horizontally on a flat surface is used to fire a bullet of mass 0.03 kg. If the bullet moves off with a velocity of 520 ms⁻¹, calculate the recoil velocity of the gun.

A metal of length 17.02 m was heated till its temperature increased by 80° If its new length is 17.06 m, calculate its linear expansively.

Alcohol is preferred to mercury as a thermometric liquid in the arctic region because it

An iron beam of heat capacity 670 JK⁻¹ was heated till its temperature changes from 44 °C to 94 °C. Calculate the quantity of heat supplied to the beam.

The saturated vapour pressure of water vapour is 15 mmHg at 25 °C and 9 mmHg at 8 °C. If the average air temperature is 250 °C and the dew point is 8 °C, calculate the percentage relative humidity of the air.

A fixed mass of gas was heated at constant pressure from 27 °C to 57 °C.

The following are steps involved when charging an electroscope by induction:

I. The rod is removed

II. A negatively charged rod is brought near the cap

III. The cap is touched by a finger

IV. The finger is removed. The correct sequence is

A radio station broadcasts at a frequency of 1 50 kHz, calculate the wavelength of the wav/ [c=3.0×10⁸ ms⁻¹]

An object of height 80 cm is placed in front of a pin-hole camera of length 12cm, if the magnification of the image produced is 0.4, calculate the image height.

The critical angle of a semi-circular glass block is given as43° if a ray of light is incident in the glass at 42° to the normal, what is the nature of the refracting ray(s)?

In an experimental set-up for the production of a pure spectrum, what is the function of the converging lens placed next to the light source? It

Which of the following is not a similarity between gamma rays and ultraviolet rays? Both

The part of the human eye that serves the same purpose as the aperture of a camera is

In an experiment to determine the frequency of the note produced by a disc siren, the counter counts 200 revolutions in 2 minutes. If the disc has 40 holes in its ring, calculate the frequency of the note emitted

An air column in a closed pipe is set into vibration to produce a note of fundamental frequency 220 Hz. If the pipe is 37.5 cm long, determine the speed of the sound

Which of the following sets consists of stringed instruments only?

Which of the following statements is correct about electric and magnetic field? Electric field

Calculate the gravitational potential at a point on the earth's surface, if the mass of the earth is 6.0x1024 kg. [Radius of the earth = 6.38×106 m, G = 6.7×10-11 Nm2kg-2]

Three lamps rated 60 W, 220 V each are connected in parallel across a 220 V source. Calculate the magnitude of the current in the lamps.

A galvanometer connected in series to a battery can be used to measure the battery's voltage by connecting to it a/an

The effective capacitance of an arrangement of four capacitors is 5 µF. Which of the circuit diagrams below represents the arrangement?

An industrial method of making magnet is

Electromagnets are used in the following devices except in

Eddy current loss and heat loss in a transformer are

An alternating current is represented by the relation I = 2 sin 700πt. The value for peak current and frequency are

An alternating current with a peak value of 3 A passes through a resistor of resistance 10 Ω. Calculate the time rate at which energy is expended in the resistor.

Figure 3.1 is a representation of the earth, showing different points on its surface.

Which of the sets of points stated below have equal acceleration due to gravity?

The forces acting on a ball of mass m, falling with an acceleration a, through a viscous liquid are represented in Figure 3.2.

Which of the following expressions correctly represents the weight W, of the ball?

The rate of diffusion in solid, liquid and gas decreases from

The following statements are correct about Bohr's model except that it

Two radioactive materials A and B with M and N numbers of atoms have half-life of 5 and 15 days respectively. Express the fraction of the remaining atoms of A to B after 15 days.

A radioactive element 23892X emits two α-particles and two β-particles to form an element Y. The mass and atomic numbers of Y will be

A radioactive isotope of thorium has a half-life of 24 days, calculate its decay constant.

The particle nature of light can be used to explain which of the following pairs of phenomena?

A car engine is rated 5000 h.p. Calculate its power in kilowatt. [1 h.p. = 746 watts]

The function of a condenser in a slide projector is to

A compound microscope with objective and eyepiece lenses of focal lengths 4.0 cm. and 5.0 cm respectively is used to view an object. If the final image is formed at a distance Y from the eyepiece lens, express the distance of the first image from the eyepiece lens in terms of the given parameters.

In electroplating an iron spoon with gold in a voltammeter, the

Which of the following components is not common to a d.c generator and an a.c generator?

The correct route of electricity transmission from the power station to the consumers is through

Machines

1. Make work to be done faster.

II. Multiply effort.

III. Make work to be done conveniently.

Which of the statements above is/are correct?

When generating electricity from a dam, the following processes are involved:

I. The rotating dynamo produces electricity

II. Water flows out of the dam through a narrow opening

III. The turbine is rotated by the falling water.

Which of the processes stated above occur first and last respectively?

A component of rockets is

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