A force of 50 N moves an object 4 m in the direction of the force. The
work done is:

Two sources are coherent if they have

A force of 20 N is applied to a trolley of mass 5 kg moving along a
frictionless track. After 2 s its velocity changes by:

A ball is projected horizontally from a height of 20 m at 10 m/s (g = 10m/s²). The time to hit the ground is:

1 volt is equivalent to

Repeated measurements that are close to each other but far from the
true value are:

Current is defined as

A 10 kg crate slides down a frictionless incline at 30°. Its acceleration
(g = 10 m/s²) is:

An object dropped from rest reaches the ground in 2.0 s. Its fall
distance (g = 9.81 m/s²) is approximately

Two equal resistors R in series across a 12 V battery. The voltage
across one resistor is

On a stretched string of length 1.2 m fixed at both ends, the
wavelength of the fundamental (first harmonic) is

An engine takes in 1500 J of energy and produces 600 J of useful work.
The efficiency is

Beyond the elastic limit, a material:

After 4 half-lives, the fraction of the original sample remaining is

The unit of force, the newton, is equivalent to:

An athlete climbs stairs of height 4 m in 5 s. Mass = 60 kg, g = 10m/s². Output power is:

An object of mass 0.5 kg moving at 6 m/s collides with a wall and
rebounds at 4 m/s in the opposite direction. The change in momentum has
magnitude:

Archimedes' principle states that the upthrust on a submerged object
equals:

Resistivity ρ is related to resistance R, length L, and area A by

Polarization is a property of:

A wire of original length 2 m extends by 4 mm under load. The strain is

Young modulus is defined as

Two masses, 3 kg and 2 kg, are connected by a light string over a
frictionless pulley. The acceleration of the system (g = 10 m/s²) is:

The impulse on an object equals:

If a 12 V battery drives 0.4 A through a resistor, its resistance is

At any junction in a circuit, the sum of currents in equals

A wave has frequency 250 Hz. Its period is

An object accelerates uniformly from 5 m/s to 25 m/s in 4 s. Its
acceleration is:

When you walk forward, the force that propels you is:

A stone is dropped from rest. Taking g = 9.81 m/s², its speed after 3s is:

The I–V graph of a filament lamp is non-linear because

Which instrument is most suitable for measuring the diameter of a thin
wire?

A couple consists of:

A point object is in equilibrium under three forces. The vector sum of
the forces is:

A reading consistently larger than the true value indicates:

For the projectile in the previous question, the horizontal range is:

A pendulum bob is released from height 0.20 m above its lowest
point. Its speed at the lowest point (g = 9.81) is approximately:

Constructive interference occurs when the path difference between
two coherent waves equals

A spring of constant 200 N/m is stretched by 0.05 m. The energy
stored is

5400 m written in standard form is:

The change in gravitational potential energy when a 70 kg person climbs 5 m (g = 9.81) is:

A car moves at constant velocity 30 m/s against a resistive force of 800 N. The power delivered by the engine is

A stationary observer hears a source emitting at 500 Hz. If the source
moves toward the observer at vₛ << c, the observed frequency is

A skydiver reaches terminal velocity when:

The nucleus of an atom contains

A boat moves at 4 m/s east; a current flows at 3 m/s north. The boat's
resultant velocity is:

The speed of light in vacuum is approximately

Express 0.004560 m to 2 significant figures.

A block of density 600 kg/m³ floats in water (1000 kg/m³). The fraction submerged is:

A proton consists of

On a CRO, the time-base setting controls:

Atmospheric pressure at sea level is approximately:

Which is a vector quantity?

How many micrograms are in 0.5 g?

Around any closed loop in a circuit, the sum of e.m.f.s equals

A net force of 12 N acts on a 3 kg mass. The acceleration is:

An object of mass 0.6 kg has volume 200 cm³. Its density in kg/m³ is:

Which is NOT an SI base unit?

An NTC thermistor's resistance

The kinetic energy of a 1500 kg car at 20 m/s is:

A rocket gains thrust by:

Stationary waves are formed when two waves of the same frequency

A uniform 4 m beam of weight 80 N is pivoted at its centre. A 50 N
load is placed 1.5 m from the pivot. The balancing force at 2 m on the other
side is:

In beta-minus decay, a neutron transforms into

An ohmic resistor has an I–V graph that is

A spring extends by 5 cm under a 10 N load. Within its elastic limit,
the load needed to extend it by 8 cm is

Which is an example of a transverse wave?

Three resistors of 2 Ω, 3 Ω, and 5 Ω in series have a total resistance
of

The static friction coefficient between a block and a surface is 0.4.
The minimum incline angle for the block to slip is approximately

A 2 kg trolley moving at 3 m/s collides with and sticks to a stationary 1
kg trolley. Their common velocity is:

An ambulance siren is heard at higher pitch when

In the notation ¹⁴₆C, the number 6 represents the:

1 kWh in joules is

In an alpha decay, the parent nucleus loses:

Which radiation is the most penetrating?

In a longitudinal wave, particles oscillate

Two perpendicular forces of 3 N and 4 N act on a point. The resultant
has magnitude:

If x = a × b, the percentage uncertainty in x is:

A wave has wavelength 0.25 m and travels at 400 m/s. Its frequency
is

The charge on an up quark is:

In a perfectly elastic collision, which is conserved?

The intensity of a wave is proportional to

A diffraction grating with 500 lines/mm has slit spacing

A reasonable estimate of the mass of an apple is:

A 100 N force pulls a sled 10 m along the ground at 60° to the
horizontal. The work done is:

Electrical power dissipated by a resistor can be written as

In a Young's double-slit experiment with slit separation d, screen distance D, and wavelength λ, the fringe spacing is

A light-dependent resistor (LDR) has a resistance that

A 5 kN force acts on a wire of cross-section 2 × 10⁻⁵m². The stress is:

Drift velocity of charge carriers in a wire is typically of order

Two resistors of 6 Ω and 12 Ω in parallel have a combined resistance
of

The pressure at the bottom of a 5 m column of water (ρ = 1000 kg/m³,
g = 10 m/s²) is:

Two waves meeting at a point combine such that the resultant
displacement is

Diffraction is most noticeable when the slit width is

An electric heater uses 2 kW for 30 minutes. The energy supplied is

On a velocity–time graph, the gradient represents:

The centre of gravity of a uniform rectangular plate is:

A car decelerates uniformly from 30 m/s to rest in 6 s. The distance
travelled is:

An object moves with uniform acceleration. Its velocity–time graph is a:

12 V battery with internal resistance 0.5 Ω delivers 4 A. The
terminal voltage is

Which EM radiation has the longest wavelength?

A 2 kg block slides down a 5 m incline at 30° and reaches the bottom
with speed 4 m/s. The energy lost to friction (g = 10) is

A length is measured as 12.4 ± 0.2 cm. The percentage uncertainty is
approximately:

If 4 A flows for 30 s, the charge transferred is