A cell of emf E and internal resistance r supplies current for the same time
A cell of emf E and internal resistance r supplies current for the same time t through external resistance R₁…
8 years ago
Questions
1 a.m.u. is equivalent to
1 a.m.u. is equivalent to Options (a) 1.6x10⁻¹² J (b) 1.6x10⁻¹⁹ J (c) 1.5x10⁻¹⁰ J (d) 1.5x10⁻¹⁹ J Correct Answer:…
8 years ago
A photon of wavelength 300nm interacts with a stationary hydrogen atom in ground
A photon of wavelength 300nm interacts with a stationary hydrogen atom in ground state. During the interaction, whole energy of…
8 years ago
A 0.01 H inductor and √3 πΩ resistance are connected in series
A 0.01 H inductor and √3 πΩ resistance are connected in series with a 220 V, 50 Hz Ac source.…
8 years ago
A dynamo converts
A dynamo converts Options (a) mechanical energy into thermal energy (b) electrical energy into thermal energy (c) thermal energy into…
8 years ago
The value of Planck’s constant is
The value of Planck's constant is Options (a) 6.63x10⁻³⁴ J.Sec (b) 6.63x10³⁴ J/Sec (c) 6.63x10⁻³⁴ kg.m² (d) 6.63x10³⁴ kg/sec Correct…
8 years ago
Out of the following which pair of quantities does not have same dimensions?
Out of the following which pair of quantities does not have same dimensions? Options (a) Planck's constant and angular momentum…
8 years ago
A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass
A spring gun of spring constant 90 N/cm is compressed 12 cm by a ball of mass 16g. If the…
8 years ago
When a mass M is attached to the spring of force constant k,
When a mass M is attached to the spring of force constant k, then the spring stretches by l. If…
8 years ago
When sound is produced in an aeroplane with a velocity of 200 m/s horizontally,
When sound is produced in an aeroplane with a velocity of 200 m/s horizontally, its echo is heard after 10√5…
8 years ago