Physics question and answers for July 16, 2024
- Q ng a Is it possible for the mot straight line so that its velocity increases while its acceleration decreases 1 No because if acceleration is decreasing the object will be...
- Q D A film of refractive index n and thickness t is deposited on a substrate of refractive index p such that p n Light of wavelength l is falling normally...
- Q Problem Consider a two dimensional square lattice with one atom of mass m per lattice point interacting with 4k qa only nearest neighbours with force constant k Take the phonon...
- Q The half life of a radioactive substance is 20 minutes The approximate time interval 1 1 between the time t when 2 3 of it has decayed and time t...
- Q 9 UN PL Two charges q and q are plac apart as shown in the figure below B shame Po nhentung Syn Pathol yn Coating na trzissu I Jusb 2...
- Q 16 Two identical holes each of cross sectional area A are opened on the opposite sides of a wide vertical vessel filled with water The difference in vertical height of...
- Q 13 Which of the following sentence is correct 1 Point O O Condition of constructive and destructive interference for transmitted and reflected light from a thin film are same Condition...
- Q b The molecules of a gas have two states of internal energy with statistical weights gi g2 and energies 0 respectively Calculate the contribution of these states to the specific...
- Q A symmetric double convex lens is cut in two equal parts by a plane perpendicular to the principal axis If the power of the original lens was 4 D the...
- Q Two identical photo cathodes receive light of frequencies f1 and f2 If the velocities of the photo electrons of mass m coming out are respectively v and v then A...
- Q Work function of two metal surfaces are 2 0 eV and 3 0 eV Both are illuminated by light energy of incident photons greater than 3 eU If graph is...
- Q of sphere Cis A are three identical smooth sphere placed on frictionless inclined plane as shown in figure then F B D 4 N 60 mg B N 90 D...
- Q Two cells of the same e m f e but different internal resistances r and r are connected in series with an external resistance R The potential drop across the...
- Q The velocity field in a two dimensional unsteady flow is given by v x y t 2xy 3xyj m s The magnitude of acceleration of fluid particle located at x...
- Q 1 A point object is placed at a distance of 30 cm from a convex mirror of focal length 30 cm The image will form at A infinity B pole...
- Q A plane travelling at 256 m s uses ultrasoni c sound generator that generates a wave of wavelength 1 6 cm and frequency 22 kHz to measure the altitude It...
- Q If one were to apply Bohr model to a particle of mass m and charge q moving in a plane under the influence of a magnetic field B the energy...
- Q The energy flux of the light emitted by a source of light is 50 Wm 2 This light energy falls on a plate of area 5 cm which completely absorbs...
- Q A large block of mass M on a smooth inclined plane is connected via a string to a small block m which is attached to a relaxed spring of force...
- Q 3 A particle having charge q and mass m is projected from the origin with velocity vo in a uniform P k magnetic field B Bok at time t 0...
- Q 5 A rectangular loop carrying current i is shown in the diagram If the magnetic field in the region is 2B1 Bo then choose the correct statement s av a...
- Q Two blocks of mass m and 2 m are connected with a string which is passing over a pulley disc of mass m and radius R as shown in the...
- Q 7 i Calculate Einstein s frequency for copper for which 0230 K Given h 6 6 10 34 J sec Boltzmann constant k 1 37 x 10 23 Joule K...
- Q If current I flows through a closed loop as shown then the magnetic field at the centre O is Only one correct answer R 20 6 0 sin 0 440...
- Q Water is flowing through a channel that is 12 m wide with a speed of 0 75 m s The water then flows into four identical channels that have a...
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