Physics-
General
Easy
Question
Permanent magnet has properties retentivity and coercivity respectively
- High-high
- Low-low
- Low-high
- High-low
The correct answer is: High-high
The materials for a permanent magnet should have high retentivity (so that the magnet is strong) and high coercivity (so that the magnetism is not wiped out by stray magnetic fields). As the material in this case is never put to cyclic changes of magnetization, hence hysteresis is immaterial.
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The magnetic susceptibility of a paramagnetic substance at 
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C will be
The magnetic susceptibility of a paramagnetic substance at C is 0.0060, then its value atC will be
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If a magnetic substance is kept in a magnetic field then which of the following substance is thrown out?
If a magnetic substance is kept in a magnetic field then which of the following substance is thrown out?
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Curie temperature is the one above which
Curie temperature is the one above which
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Which of the following is represented by the area enclosed by a hysteresis loop (B-H curve)?
Which of the following is represented by the area enclosed by a hysteresis loop (B-H curve)?
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Susceptibility of ferromagnetic substance is
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Shape of the graph of position 
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As shown in the figure particle P moves from A to B and particle Q moves from C to D. Displacements for P and Q are and y respectively then
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Here is a cube made from twelve wire each of length L, An ant goes from A to G through path A-B-C-G. Calculate the displacement.
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As shown in the figure a particle starts its motion from 0 to A. And then it moves from. A to B. 
Is an are find the Path length
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Assertion (A): 
is divisible by the square of14 where n is a natural number Reason (R): 
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Assertion (A): Number of the dissimilar terms
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Reason (R): Number of terms in the expansion of 
is n+1
Assertion (A): Number of the dissimilar terms
in the sum of expansion is 206
Reason (R): Number of terms in the expansion of is n+1
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B=600!, 
then
B=600!, then
Maths-General
maths-
The arrangement of the following with respect to coefficient of 
in ascending order where 
A) 
in 
where B) 
where C) 
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where D) 
in 
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maths-General
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A: If the term independent of 
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is 405, then n=
: If the third term in the expansion of 
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: If in the binomial expansion of 
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A: If the term independent of in the expansion of is 405, then n=
: If the third term in the expansion of is 1000, then n=(here n<10)
: If in the binomial expansion of the coefficients of 5th 6th and 7th terms are in A.P then n= [Arranging the values of n in ascending order]
maths-General
