Exciting Announcement for Dubai Students | IA Mastery Week! 🌟

Propagation of Errors | Absolute, Relative, Percentage Errors

Instrumental Errors and Least Count

Systematic Errors, Random Errors | Precision and Accuracy

Understanding Significant Figures in Measurements

Measurements, Coherent system of units, SI Units

A star has a parallax angle of 1 × 10-2arc-second at the orbit of the Earth. What is the distance

In a simple model of a nuclear reactor, four neutrons are emitted per fission on average.The average

A suitable material for use as a moderator in a nuclear reactor is...

A nucleus of nuclide X decays. Which series of emissions will produce an isotope of X?

Three products of radioactive decay are:I. alpha particlesII. beta particlesIII. gamma photons. Whic

In a Compton scattering experiment a photon of wavelength l0 and frequency f 0 interacts wit

A photoelectron is emitted when a photon of energy E is incident on a metal surface.The work functio

What is the variation with nucleon number of the density of nuclei?

An ion X contains the following particles:• 53 protons• 89 neutrons• 54 electrons. What is the

A coil of wire rotates at a constant angular speed w in a uniform magnetic field. The variation with

Who was the first scientist to show that electric charge is quantized?

Negative charge carriers travel counter-clockwise in a circular coil that lies in the plane of the

Charge is moving in a wire that is at right angles to a uniform magnetic field.The length of the wir

Two parallel conducting plates are separated by 5.0cm. The variation of electric potential with

The unit of m 0 × e 0 expressed in fundamental SI units is...

Which graph shows the variation of gravitational potential V with distance d from the surface ofthe

A planet P has a diameter one-third that of the Earth. The mass of Earth is 18 times that of P. The

Light of wavelength 5.8 × 10-7m is normally incident on a diffraction grating thathas 400000 lines

A pipe of length L is closed at one end. What is the wavelength of the fifth-harmonic standing wave

Light of wavelength l is incident on two parallel slits of width b that are separated by distance d.

Light passes through two parallel layers as shown.The refractive indices for light travelling betwee

An object performs simple harmonic motion with frequency f . The distance between the extreme positi

A wave is travelling through a medium. The variation with time t of the displacement d of a

A mass–spring system oscillates with time period T1 .Another identical spring is connected in parall

A cube of side 1.0cm has a resistance between opposite sides of 50W.The material is reshaped

A continuous belt of width 0.60m travels at a constant speed of 2.5ms-1. The belt has a uniformdistr

Three combinations of resistors are shown. The resistors are identical. What is the total resistanc

Which pressure–volume (P–V) diagram represents a Carnot cycle?

An ideal gas is held in a cylinder by a piston. The piston compresses the gas rapidly. The average

What is a primary cause of the enhanced greenhouse effect?A. Melting of ice at Earth’s polesB. Incre

A block of ice of mass M is at its melting point.A smaller mass m of water at a temperature of T°C i

Observer X sees a spacecraft moving in the positive x-direction at a speed of 0.50c.Observer Y sees

Two small spheres each of mass 10kg are 8.0m apart and connected by a rod of negligible mass.

A system of moment of inertia I rotates from rest about a given axis. The angular acceleration a

An object of mass 5.0kg is initially at rest. An impulse of 2.0Ns acts on the object. What is the fi

A satellite undergoes one circular orbit of the Earth every 24 hours.What is the angular velocity

A sphere of density r and radius R rests on the bottom of a tank of water. The buoyancy force onthe

A force acts on a cube of mass m that accelerates upwards along a vertical frictionless surface.

The variation with time t of the acceleration a of an object is shown. At t = 0 the object is at res

Instantaneous velocity is defined as...

An alternating current (ac) generator rotates 300 times in 60s. The dashed line shows how the

A circular coil of wire is in a region of uniform magnetic field directed out of the page, refer to

The escape speed from planet X is vesc. Planet Y has twice the density and half the radius ofplanet

The graph shows the variation of the gravitational potential V with distance r from the centre of a

The diagram shows gravitational equipotential surfaces around two identical masses. The greatest

X shows the position of a spectral line in the emission spectrum of helium from a stationary source

Monochromatic light of wavelength l is incident normally on a diffraction grating of slit spacing 92

Light of wavelength l is incident on a slit of width b and forms a diffraction pattern. The central

An iceberg oscillates up and down in the sea with simple harmonic motion. At time t = 0 the ice

The surface of a planet absorbs an intensity of 400Wm-2 and reflects 100Wm-2. The surface

The four energy states for an atom are shown. What is the lowest frequency of radiation that can

An unstable nuclide has too many protons.What is the most likely decay of the nuclide?

An aircraft of mass M turns in a horizontal circle. The net force on the aircraft is F.A second airc

P and Q are two parallel wires perpendicular to the page that carry currents of equal magnitude inop