A beam of I mA protons of kinetic energy of 800 MeV passes through a 1 cm copper cube. Compute the maximum energy deposited per second in the copper. Assume the cube to be thermally insulated, and compute the temperature rise per second.

Q: Average kinetic energy of a gas depends on which of the following factors? a) Nature of gas b) Tempe...

A: B

Q: The electronic structure of one-dimensional chain of sodium (Na) atoms can be approximately describe...

A: Concept: In one dimension, the energy difference between the number of energy levels corresponding t...

Q: An electric field is directed along the tangent of an equipotential surface.a) Trueb) False

A: B

Q: The speed of sound in air is 330m/s. What is the mass of 1 mole of air? Assume it is an ideal gas. a...

A: C

Q: sinusoidal wave has an amplitude of 2cm. It is travelling in the negative x-direction. The distance ...

A: D

Q: A 20 kg block B is suspended from a 40 kg cart A with an initial angle 30 degrees from the vertical ...

A: Apply principle of conservation of linear momentum mA(vA)1+mBvB2=mAvA+mBvB0=mAvA+mBvBvA=-mBmAvB     ...

Q: What is the relation between work obtained in an reversible and irreversible process? a) Wrev > W...

A: A

Q: Which one of the following is similar between electrostatic force and gravitational force? a) Force ...

A: A)  Electrostatic forces are both attractive and repulsive depending upon the type of charge, but gr...

Q: Temperature is 300K. Convert it into ℉. a) 47°F b) 80.6°F c) 27°F d) 16.6°F

A: B

Q: In which type of molecule positive and negative charges does not coincide with each other? a) Isentr...

A: C

Q: If an object is positively charged, theoretically the mass of the object ______ a) Increases slightl...

A: B

Q: wave having an amplitude of 3cm is to be superimposed with another wave of the same amplitude. What ...

A: B

Q: ball of 80mg mass and a 2*10-8 charge is hung with a thread in a uniform horizontal electric field o...

A: A

Q: What is the dimension of the dipole moment?a) [I L T]b) [I L T-1]c) [I L2 T]d) [I T]

A: A

Q: What is the relation between work obtained in an reversible and irreversible process? a) Wrev > W...

A: When the system undergoes a change from its initial state to the final state, the system is said to ...

Q: Which of the following is an example of reversible process? a) Wood to ashes b) Burning of matchstic...

A: A

Q: What should be the shape of a conductor that can hold a charge for long? a) Cubical b) Conical c) Sh...

A: D

Q: What number of electrons will flow in one minute through a conductor that carries 1 Ampere current? ...

A: C

Q: What is the principle of a calorimeter? a) Heat loss rate is directly proportional to temperature di...

A: B

Q: The electromagnetic energy emitted by a perfect radiator corresponding to a temperature T and surfac...

A: A

Q: The force acting on a particle of mass 1kg is -2x, where x is the displacement from the mean positio...

A: B

Q: Which group among the following is insulator? a) Silver, copper, gold b) Paper, glass, cotton c) The...

A: A

Q: Let T1 be the time period of a single spring mass system on a horizontal surface. Let T2 be the time...

A: C

Q: Zeroth law of thermodynamics can be derived. It is not based on observation. True or False? a) True ...

A: B answer

Q: Change of phase occurs at a constant temperature, which implies that even on addition of heat to a s...

A: A

Q: If a charged body is moved in an electric field against the Coulomb force, then ________ a) Work is ...

A: The work done is defined as the product of the force applied on an object and the displacement on th...

Q: The rate of cooling of water increases with fall in temperature. True or False? a) True b) False

A: B

Q: What will be the value of temperature of hot reservoir in a carnot cycle, if the temperature of cold...

A: C

Q: Which of the following is the Kelvin Planck statement? a) Heat from a cold reservoir cannot be trans...

A: D

Q: What should be the temperature of 1g of ice, so that when it’s added to 9g of water, lowers the temp...

A: B

Q: 1 emu = __________ C a) 10 b) 3*109 c) 4.8*10-10 d) 0.1

A: A

Q: 1 V/m= _______ a) 1N/C b) 3*1010 N/C c) 107 N/C d) 1010 N/C

A: A

Q: The electric field at a point on the perpendicular bisector of a dipole is directed ______ a) Along ...

A: C

Q: Damping force on a spring mass system is proportional to which of the following quantities? a) Veloc...

A: A

Q: Select the correct statement. a) Internal energy is a path variable b) Heat is a path variable c) Wo...

A: B

Q: What is the number of electric field lines coming out from a 1C charge? a) 9*109 b) 8.85*10-12 c) \f...

A: C

Q: Identify the factor on which the capacitance of a parallel plate capacitor does not depend. a) Perme...

A: A

Q: A circular annulus of inner radius r and outer radius R has a uniform charge density a. What will be...

A: B

Q: Figure shows the energy-level diagram for neon. What wavelength is emitted when the neon makes a dir...

A: Given: The energy difference between two states is E=20.66 eV. The formula to calculate the energy...

Q: How many Balmer series lines are in the visible part of the spectrum?

A: This is a question from atomic and molecular physics. The Balmer series or Balmer Lines are one of t...

Q: What is the ratio of densities of 2 gases, O2 & N2, having partial pressures in the ratio 2:3? a...

A: A

Q: Electromagnetic waves are considered to be which of the following types? a) Transverse b) Longitudin...

A: C

Q: What is regelation? a) Refreezing of ice on addition of impurities b) Refreezing of ice on reduction...

A: B

Q: An engine works between 2 reservoirs of temperature 500K and 300K. A company claims that this engine...

A: B

Q: constant pressure P the volume of a gas increases from V1 to V2 when ‘Q’ amount of heat is removed f...

A: C

Q: Which of the following law explains the relation between the charge inside a surface and electric fl...

A: Gauss’s Law gives the relation between electric flux and charges inside a surface. It states that el...

Q: What is the number of molecules in 3 cubic metre of a gas at 3atm & 27°C? a) 2.17*10-20 b) 6.38*...

A: A

Q: Consider a gas enclosed in a box. A molecule of mass m, having a velocity -2i+3j+4k collides with a ...

A: A

Q: sun emits light having maximum intensity at a wavelength 468nm. Assume emissivity of sun is 1. Calcu...

A: Option

Q: What direction is the wheel moving?

A: