A particle is moving along the x- axis with its coordinate with time 't' given by . Another particle is moving along the y-axis with its coordinate as a function of time given by
At
s, the speed of the second particle measured in the frame of the first particle is given by
. Then
(in m/s) is ____________.
Option: 1 580
Option: 2 700
Option: 3 100
Option: 4 300
At time t= 1 s
So the value of v is 580
View Full Answer(1)The magnifying power of a telescope with tube length is
. What is the focal length (in cm) of its eye piece?
Option: 1 30
Option: 2 40
Option: 3 10
Option: 4 20
So the correct answer is given in option 3.
View Full Answer(1)The dimension of stopping potential in photoelectric effect in units of Planck's constant 'h', speed of light 'c' and Gravitational constant 'G' and ampere A is :
Option: 1
Option: 2
Option: 3
Option: 4
Let
Now,
So,
From here we will get: p-q=1---------(1)
2p+3q+r=2----------(2)
-p-2q-r=-3----------(3)
s=-1-----------(4)
From equation 1, 2,3 and 4 we will get: p=0,q=-1, r=5 and s=-1
So,
The critical angle (in degree)of a medium for a specific wavelength, if the medium has relative permitivity and relative permeability
for this wavelength, will be :
Option: 1 15
Option: 2 30
Option: 3 45
Option: 4 60
and
By using snells law
So the correct option is 2.
View Full Answer(1)
Consider two solid sphers of radii and masses M1 and M2, respectively. The gravitational field due to sphere
and
are shown. The value of
is:
Option: 1
Option: 2
Option: 3
Option: 4
Considering Case 2 and case 1, one by one
and using
R-Radius of sphere
So the correct option is 2.
View Full Answer(1)The major product in the following sequence of reaction is :
Option: 1
Option: 2
Option: 3
Option: 4
Therefore, Option(3) is correct.
View Full Answer(1)Among the reactions (a) - (d), the reaction(s) that does / do not occur in the blast furnace during the extraction of iron is / are :
(a) (b)
(c)
(d)
Option: 1 (C) and (D)
Option:2 (A)
Option: 3 (A) and (D)
Option: 4 (D)
The following reactions do not occur in the blast furnace:
C)
D)
Therefore, Option(1) is correct.
View Full Answer(1)The correct order of the calculated spin-only magnetic moments of complexes (A) to (D) is : (A) (B)
(C)
(D)
Option: 1
Option: 2
Option: 3
Option: 4
As we have learnt,
contains
which has a
configuration having
and
contains
which has a
configuration. In a weak ligand field, it has
and hence has
contains
which has a
configuration. In a strong ligand field, these electrons get paired up and hence
and
contains
which has a
configuration. These electrons get paired in the presence of strong ligand like
and hence,
and correspondingly
.
Therefore, the correct order of spin only magnetic moment of the complexes is
Therefore, Option(4) is correct.
View Full Answer(1)Arrange the following bonds according to their average bond energies in descending order :
Option: 1
Option: 2
Option: 3
Option: 4
The values of bond energies are given below:
Thus, the correct order of bond energies is:
Therefore, Option(1) is correct.
View Full Answer(1)In the following reactions, products (A) and (B) respectively are: (hot and conc.)
(dry)
Option: 1
Option: 2
Option: 3
Option: 4
As we have learnt,
Chlorine reacts with and
and undergoes disproportionation. The products depend upon the concentration of the base and also the temperature.
The reactions are given as
(Hot and Conc.)
(Dry)
Therefore, Option(4) is correct.
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The magnifying power of a telescope with tube length is . What is the focal length (in c
Consider two solid sphers of radii
The major product in the following sequence of reaction is :
The correct order of the calculated spin-only magnetic moments of complexes (A) to (D) is : (A) (B)
Arrange the following bonds according to their average bond energies in descending order : Option
In the following reactions, products (A) and (B) respectively are: (hot and