NDA Physics 2015/2016 Past Questions

If tension is maintained on a stretched string of length 0.6m, such that its fundamental frequency of 220 Hz is excited, determine the velocity of the transverse in the string.

What is a characteristic of a poor thermometric liquid?

Calculate the refractive index of the material drawn below

The eye controls the amount of light reaching the retina by adjusting the_____.

At what frequency would a capacitor of 2.5 μF used in radio circuit of a reactance of 250Ω be?

The earth retains its atmosphere because?

When water in a bucket is whirled fast overhead, the water does not fall out at the top of the motion because?

If a hoop of radius "a" oscillates about an axis through its circumference perpendicular to its plane, the period is?

If a hydrometer of mass 20 g and volume 30 cm³ has a graduated stem of 1cm³ and floats in water, the exposed length of the system is?

If a section of a soap bubble through its centre is considered. The force on one half due to surface tension is?

An object of mass 2kg moving with a velocity of 4ms^-1 has a kinetic energy of__.

When water from a pipe is incident horizontally on a wall, the force on the wall is calculated from?

When a ball of mass 2kg moving with a velocity of 10 ms^-1 collides head-on with a ball of mass 3kg and both move together after the collision, the common velocity is?

The ice and stream points of a thermometer are 20 mm and 100 mm respectively. A temperature of 75°C corresponds to y mm on the thermometer. What is y?

Which of the following quantities is a vector quantity?

The most suitable type of mirror used for the construction of a searchlight is the?

In which of these is the expansion of solids a disadvantage?

Which of the following statements about the electric motor is false?

Three 4 ohms resistors were connected in series by Tola while Ade connected the same set of resistors in parallel. The ratio of the value obtained by Ade to that obtained by Tola is?

When a yellow card is observed through a blue glass, the card would appear as __.

Two long, parallel wires separated by 4.00 cm carry currents of 12000 mA and 20000 mA. Calculate the force per unit length on each wire.

All the following about an RLC circuit is correct except?

On which of the following does the magnitude of the magnetic field acting on a pair of charges depends: (I) charge (II) radius of separation of the charge (III) magnetic field (IV) the component of the velocity

A copper bar 15 cm long is perpendicular to a field of 0.8wb/m² and moves at right angles to the field with a speed of 0.50m/s. Calculate the EMF induced in the bar.

Which of the units below is an equivalent of 1 Tesla (T)

A satellite is to be launched from the surface of the moon. What initial speed is needed to be given to the satellite in order for it to escape the gravitational attraction of the moon? (Mass of the moon = 7.4 x 10²² Kg, Radius of the moon = 1.75 x 10⁶m)

The magnetic needle defines the:

Atoms of different elements with the same mass number are referred to as?

An object mass 50kg is released from a height of 2m. Find the kinetic energy just before it strikes the ground.

The solar energy comes from ___.

Which of the following instruments has a pure tone?

Which of the following devices may be used to convert AC to DC?

In the diagram below, what would happen to the current, I, if another resistor R2 connected in parallel to R1?

The principle of operation of an induction coil is based on __.

Which of the following prevents the escape of radiant heat from vacuum flask?

The tendon in a man's leg is 0.01 m long. If a force of 5 N stretches the tendon by 2.0 x 10^-5 m, calculate the strain on the muscle.

The atmospheric pressure due to water is 1.3 x 10⁶Nm^-2 What is the total pressure at the bottom of an ocean 10m deep?

A gas has a volume of 100 cm³ at 270 °C. If it is heated to temperature T unit a final volume of 120 cm³ is attained, calculate T.

A 0.05kg bullet travelling at 500 ms^-1 horizontally strikes a thick wall. It stops after penetrating through the wall a horizontal distance of 0.25 m. What is the magnitude of the average force the wall exerts on the bullet?

The diagram below represents a transverse electromagnetic wave travelling with a speed of 3.0 x 10⁸ ms^-1 . What is the frequency of the wave?