Consider the following statements
(i) For a permanent magnet the area of a hysteresis loop is allowed to be large.
(ii) Coercively of the material in permanent magnets should be small.
Which of the following statements is/are true?
1. (i) but not (ii)
2. (ii) but not (i)
3. Both (i) and (ii)
4. Neither (i) nor (ii)
Consider the following statements
(i) For a permanent magnet the area of a hysteresis loop is allowed to be large.
(ii) Coercively of the material in permanent magnets should be small.
Which of the following statements is/are true?
(i) For a permanent magnet the area of a hysteresis loop is allowed to be large.
(ii) Coercively of the material in permanent magnets should be small.
Which of the following statements is/are true?
1. (i) but not (ii)
2. (ii) but not (i)
3. Both (i) and (ii)
4. Neither (i) nor (ii)
2. (ii) but not (i)
3. Both (i) and (ii)
4. Neither (i) nor (ii)
Subtopic: Curie's Law and Hysteresis (OLD NCERT) |
Please attempt this question first.
Hints
Please attempt this question first.
Two capacitors of 10μF and 20μF are connected in series with a 30 V battery. The charge on the capacitors will be respectively
1. 100μ C, 100μC
2. 200 μC, 100 μC
3. 200 μC, 200 μC
4. 100 μC, 200 μC
2. 200 μC, 100 μC
3. 200 μC, 200 μC
4. 100 μC, 200 μC
Subtopic: Capacitance |
57%
Please attempt this question first.
Hints
μ0
μ0
is
The velocity of sound in air at NTP is 330 m/s. What will be its value when temperature is doubled and pressure is halved?
m/s
m/s
Subtopic: Types of Velocities |
54%
Please attempt this question first.
Hints
Doppler’s effect is sound in addition of relative velocity between source and observer or both are moving. Doppler effect in light depend only on the relative velocity of source and observer. The reason of this is
Subtopic: Doppler's Effect (OLD NCERT) |
54%
Please attempt this question first.
Hints
A
ATwo coherent monochromatic light beams of intensities \(I\) and \(4I\) superimpose. The maximum and minimum possible intensities in the resulting beam are:
1. \(5I\) and \(I\)
2. \(5I\) and \(3I\)
3. \(3I\) and \(I\)
4. \(9I\) and \(I\)
Subtopic: Superposition Principle |
72%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The energy gap between conduction band and valence band if of the order of 0.07 eV. It is a/an
Subtopic: Energy Band theory |
Please attempt this question first.
Hints
© 2024 GoodEd Technologies Pvt. Ltd.