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Engineering
1 week, 6 days ago

The total angle turned through during this interval is

A Abhishek Sahu
Answered 1 week, 6 days ago
Given initial angular velocity, final angular velocity,  = 24 rad/s  t = 8 seconds angular acceleration,    option (3) is correct
Engineering
1 week, 6 days ago

water column of height  7 cm. If refractive index of water is

1. 1.269

2. 1.286

3. 1.259

4. 1.310

A Abhishek Sahu
Answered 1 week, 6 days ago
It is given that wave number in 6cm of glass is the same as the wave number in water with height 7 cm. Let  is wavelength of light in glass and   is wavelength of light in water. According to question,  Also we know that relation between refractive index and wavelength,  Putting values,  Option (2) is correct
Engineering
1 week, 6 days ago

The true power consumed in a.c. circuit is

1. 400 W

2. 600 W

3. 220 W

4. 800 W

A Abhishek Sahu
Answered 1 week, 6 days ago
Given, R = 18 ohm Z = 33 ohm Vrms = 220 V For calculating Power,  option (4) is correct
Engineering
1 week, 6 days ago

3. In which photo current is independent of intensity of incident radiation

4. Which may be operated in forward or reverse bias

A Abhishek Sahu
Answered 1 week, 6 days ago
Option (1) is correct Photo Diode is operated only in reverse bias
Medical
2 weeks, 3 days ago

T Test
Answered 2 weeks, 1 day ago

Medical
2 weeks, 3 days ago

(1)

It is scalar quantity

(2)

Value of mass not depends on gravity

(3)

mass of a body is given by  here symbol have their usual meaning.

(4)

mass can never be zero.

A Abhishek Sahu
Answered 2 weeks, 2 days ago
Option (3) is correct.  Because the "" here is relativistic mass and  is rest mass.This equation tells about the relativistic mass change when an object travels at a very high speed. Hence this is incorrect about the mass.  Also mass is a scalar quantity and it can not be zero, because according to law f conservation od mass, Mass can neither be created nor destroyed.
Engineering
2 weeks, 3 days ago

A Ankit Dutt
Answered 2 weeks, 1 day ago
As options are not given in the questions, so I am solving this question considering these below options. You can relate to your approach in the same way. Options: Thus, among the given pairs, only  have  hybridisation.
Engineering
2 weeks, 3 days ago

A Ankit Dutt
Answered 2 weeks, 1 day ago
As we learnt in Magnetic behaviour of molecule - If  all the molecular orbitals in a molecule are doubly occupied, the substance is diamagnetic - wherein However if one or more molecular orbital are singly occupied it is paramagnetic e.g. O2 Electronic configuration of  molecule  Since there are 2 unpaired electrons in  &  degenerate orbitals, so,  is paramagnetic. Similarly, for  molecule,...
Engineering
2 weeks, 3 days ago

A Ankit Dutt
Answered 2 weeks, 1 day ago
As we learnt in Bond Order - Bond order is defined as one half the difference between the number of electrons present in the bonding and the antibonding orbitals. - wherein  We know that bond order  of all the species given,  has the highest bond order at 2.5 thereby giving it the lowest bond length. Option 1) This is the correct option Option 2) This is an incorrect option Option 3) This...
Engineering
2 weeks, 4 days ago

R Rakhi
As we learnt in Mole Fraction - It is the ratio of moles of solute or moles of solvent to moles of the solution. - wherein If a substance ‘A’ dissolves in substance ‘B’ and their number of moles are  and  respectively; then the mole fractions of A and B are given as Mole fraction of A = (number of moles of A)/(number of moles of solution ) = /(+ )    At   ,                                      ...
Engineering
2 weeks, 4 days ago

R Rakhi
classical smog. The smog is formed by condensation of water vapour with H2S and SO2 over dust and smoke particles. It is dark brown and opaque.
Medical
2 weeks, 4 days ago

A Abhishek Sahu
Answered 2 weeks, 2 days ago
Average total Energy density,
Engineering
2 weeks, 5 days ago

A Abhishek Sahu
Answered 2 weeks, 2 days ago
Given,  m = 2 kg F  = 2t^2 i a = F/m =  2t^2/2 = t^2 i Assuming initial velocity was zero, u = 0 We know that, dw = F.dx Put t = 3 secs W = 81 J
Engineering
2 weeks, 5 days ago

A Abhishek Sahu
Answered 2 weeks, 2 days ago
Kirchoff's first law - - wherein   Apply Kcl at Q I6+I3 = I1+ I2   .........(1) I1 = 0.3A I4 = 0.8A I5 = 0.4A KCL at 5 I4= I5 +I3 I3 = I4 - I5     = 0.8 +0.4     =0.4A KCL at R I1+I2 = I4 I2 = I4 - I1     = 0.8 - (-0.3)     =1.1A From equation (1) I6 + I3 = I1+ I2 I6 = I1 + I2 - I3     = -0.3+1.1 -0.4     =0.4A I2 = 1.1A I3 = 0.4A I6 = 0.4A
Engineering
2 weeks, 5 days ago

A Abhishek Sahu
Answered 2 weeks, 2 days ago
Ideal gas equation, PV = nRT n = w/M where w is weight of gas and M is molar mass PV = w/M (RT) => PM = w/V (RT)                    (density, d =w/V) => PM = dRT d = PM/RT d = 5x28/0.082x500 = 3.41 g/ml
Engineering
2 weeks, 5 days ago

A Abhishek Sahu
Answered 2 weeks, 1 day ago
Let Z = x +iy Hence z will lie on imaginary axis for every x
Engineering
2 weeks, 5 days ago

A Abhishek Sahu
Answered 2 weeks, 2 days ago
Alpha emission :  Beta Emission :  In this problem, both alpha and beta emissions are taking place. Putting value of A and Z Now in the product nucleus, Number of protons = 82 and number of neutrons = 206-82 =  124 Ratio of Neutron/Proton = 124/82 = 62/41
Engineering
2 weeks, 5 days ago

A Abhishek Sahu
Answered 2 weeks, 2 days ago
Given, V =nU Mirror formula,  In concave mirror
Engineering
2 weeks, 5 days ago