Hand picked material and question banks

Latest Popular RatedShowing Page 29 of 30Total Questions 238 Join Examsbook

Q:
What is the constant of proportionality of an oscillator if the damping force is directly proportional to the velocity
783 0

Answer : 1. "Kg.s-1"
Explanation :
The damping force of an oscillating particle is observed to be proportional to velocity. The constant of proportionality can be measured in. kgs−1.

Q:
A wire loop is rotated in a magnetic field such that the frequency of change of direction of the induced emf is
774 0

Answer : 3. "Twice per revolution"

Q:
Which of the following elements has the lowest melting point?
763 0

Answer : 2. "Hydrogen"

Q:
Find the molecular mass of a gas that takes three times more time to effuse as compared to He with the same volume
759 0

Answer : 2. "64 u"
Explanation :
Its molecular mass will be: 64u.

Q:
The amount of work done in moving a charge of 4C across two points having a potential difference of 6V is ______.
748 0

Answer : 4. "24 J"

Q:
Which among the following instruments is used to measure either direct or alternating electric current?
663 0

Answer : 3. "Ammeter"
Explanation :
1. The device which is used to measure electric current in an electric circuit is called ammeter.
2. The resistance of an ideal ammeter is always zero and the electric circuit is always connected in series.

Q:
In which year was the Doppler effect discovered by Austrian scientist Christian Doppler, which describes the change in frequency of any kind of sound or light wave produced by a moving source with respect to an observer?
657 0

Answer : 3. "1842"
Explanation :
The Doppler effect was discovered by Austrian scientist Christian Doppler in 1842, describing the change in frequency of any type of sound or light wave produced by a moving source with respect to an observer.

Q:
Why do the astronauts in the international space station experience weightlessness?
656 0

Q: What is the constant of proportionality of an oscillator if the damping force is directly proportional to the velocity 783 063c8e053bdbddb32fda05b2a

Answer : 1. "Kg.s-1" Explanation :The damping force of an oscillating particle is observed to be proportional to velocity. The constant of proportionality can be measured in. kgs−1.

Q: A wire loop is rotated in a magnetic field such that the frequency of change of direction of the induced emf is 774 063c8dfd58731ac33279e451b

Answer : 3. "Twice per revolution"

Q: Which of the following elements has the lowest melting point? 763 062de6dd1313eb40eb89fc72f

Answer : 2. "Hydrogen"

Q: Find the molecular mass of a gas that takes three times more time to effuse as compared to He with the same volume 759 063c8f8598731ac33279f04bb

Answer : 2. "64 u" Explanation :Its molecular mass will be: 64u.

Q: The amount of work done in moving a charge of 4C across two points having a potential difference of 6V is ______. 748 0641974a1b34a0b67fcf4a8bf

Answer : 4. "24 J"

Q: Which among the following instruments is used to measure either direct or alternating electric current? 663 064b17cd02dc867f593e95d61

Answer : 3. "Ammeter" Explanation :1. The device which is used to measure electric current in an electric circuit is called ammeter.2. The resistance of an ideal ammeter is always zero and the electric circuit is always connected in series.

Q: In which year was the Doppler effect discovered by Austrian scientist Christian Doppler, which describes the change in frequency of any kind of sound or light wave produced by a moving source with respect to an observer? 657 064b18288568e7ff594a2d3ec

Answer : 3. "1842" Explanation :The Doppler effect was discovered by Austrian scientist Christian Doppler in 1842, describing the change in frequency of any type of sound or light wave produced by a moving source with respect to an observer.

Q: Why do the astronauts in the international space station experience weightlessness? 656 063c7a8631e8e3f3e1a3590ed

Answer : 2. "They are falling towards the earth"

Report Error

Report Error

Report Error

Report Error

Report Error

Report Error

Report Error

Report Error

Q:
What is the constant of proportionality of an oscillator if the damping force is directly proportional to the velocity
783 0

Answer : 1. "Kg.s-1"
Explanation :
The damping force of an oscillating particle is observed to be proportional to velocity. The constant of proportionality can be measured in. kgs−1.

Q:
A wire loop is rotated in a magnetic field such that the frequency of change of direction of the induced emf is
774 0

Q:
Which of the following elements has the lowest melting point?
763 0

Q:
Find the molecular mass of a gas that takes three times more time to effuse as compared to He with the same volume
759 0

Answer : 2. "64 u"
Explanation :
Its molecular mass will be: 64u.

Q:
The amount of work done in moving a charge of 4C across two points having a potential difference of 6V is ______.
748 0

Q:
Which among the following instruments is used to measure either direct or alternating electric current?
663 0

Answer : 3. "Ammeter"
Explanation :
1. The device which is used to measure electric current in an electric circuit is called ammeter.
2. The resistance of an ideal ammeter is always zero and the electric circuit is always connected in series.

Q:
In which year was the Doppler effect discovered by Austrian scientist Christian Doppler, which describes the change in frequency of any kind of sound or light wave produced by a moving source with respect to an observer?
657 0

Answer : 3. "1842"
Explanation :
The Doppler effect was discovered by Austrian scientist Christian Doppler in 1842, describing the change in frequency of any type of sound or light wave produced by a moving source with respect to an observer.

Q:
Why do the astronauts in the international space station experience weightlessness?
656 0