Which of the following transitions in hydrogen atoms emit photons of highest frequency?
Options
(a) n=1 to n=2 (b) n=2 to n=6 (c) n=6 to n=2 (d) n=2 to n=1
Correct Answer:
n=2 […]
Angular momentum of the particle rotating with a central force is constant due to
Options
(a) Constant torque (b) Constant force (c) Constant linear momentum (d) Zero torque
Correct Answer:
Zero torque
Explanation: […]
A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of
Options
(a) 100 (b) 1000 (c) 10000 (d) 10
Correct Answer:
100
Explanation:
L₁ = 10 […]
The displacement of an object attached to a spring and executing simple harmonic motion is given by x=2×10⁻² cos πt metre. The time at which the maximum speed first occurs is
Options
(a) […]
The resistance of a wire is 5 ohm at 50° C and 6 ohm at 100° C. The resistance of the wire at 0° C will be
Options
(a) 3 ohm (b) 2 […]
A particle of mass m executes simple harmonic motion with amplitude a and frequency v. The average kinetic energy during its motion from the position of equilibrium to the end is
Options
(a) […]
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