Test: BITSAT Mock Test- 10
150 Questions MCQ Test | Test: BITSAT Mock Test- 10
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Electric power is transferred at high potential because
The ratio of the longest to shortest wavelengths in Brackett series of hydrogen spectra is
A double charged lithium atom is equivalent to hydrogen whose atomic number is 3. The wavelength of required radiation for emitting electron from first to third Bohr orbit in Li⁺⁺ will be (Ionisation energy of hydrogen atom is 13.6 eV)
A photo cell is illuminated by a source of light which is placed at a distance d from cell. If distance becomes d/2, then number of electrons emitted per second will
Three capacitors of capacitances 1 μF, 2 μF and 4 μF are connected first in a series combination, and then in a parallel combination. The ratio of their equivalent capacitances will be
On a rough horizontal surface, a body of mass 2 kg is given a velocity of 10 m/s. If the coefficient of friction is 0.2 and g=10 m/s2, the body will stop after covering a distance of
A black body radiates 20 W at temperature 227oC. If temperature of the black body is changed to 727oC then its radiating power will be
Work done in turning a magnet of magnetic moment M by an angle of 90o from the magnetic meridian is n times the corresponding work done to turn through an angle of 60o, where n is
A body is projected at such an angle that the horizontal range is three times the greatest height. The angle of projection is
The parametric equations of a curve traced by a projectile on a certain planet with no surrounding are given by :y = (8t-5t2) metre and x = 6t metre, where t is in seconds. The velocity with which the projectile is projected, is
A man is standing on a weighing machine placed in a lift. When stationary his weight is recorded as 40 kg. If the lift is accelerated upwards with an acceleration of 2 m/s2, then the weight recorded in the machine will be (g=10m/s2)
In a spectrometer experiment three prisms A, B, C with same angle of prism but of different materials of refractive indices μ A = 1.33 , μ B = 1.55 and μ C = 1.44 are used. The corresponding angles of minimum deviation D A , D B , D C measured will be such that
The linear acceleration of centre of gravity of a ball which rolls down without slipping over an inclined plane with an angle of inclination of 30o will be
A meter stick is held vertically with one end on the floor and is then allowed to fall. If the end touching the floor is not allowed to slip, the other end will hit the ground with a velocity of (g = 9.8 m/s2)
C. G. of the metre scale is at its midpoint P.E. of stick is converted into rotational K. E. Thus
In planetary motion the areal velocity of position vector of a planet depends on angular velocity ′ ω ′ and the distance of the planet from sun (r). If so the correct relation for areal velocity is
A stretched string of length l, fixed at both ends can sustain stationary waves of wavelength λ, given by
Two wires are fixed in a sonometer. Their tensions are in the ratio 8:1. The lengths are in the ratio 36 : 35. The diameters are in the ratio 4:1. Densities of the mateirals are in the ratio 1:2. If the higher frequency in the setting is 360 Hz. the beat frequency when the two wires are sounded together is
A body of mass 6 kg is under a force which causes displacement in it given by S = t 2/4 metres where t is time. The work done by the force in 2 seconds is
What is the entropy change (in JK⁻1 mol⁻1) When one mol of ice is converted into water at 0oC. The enthalpy change for the conversion of ice to liquid water is 6.0 KJ mol⁻1 at )0oC.
The heat of formation of the compound in the following reaction is H₂(g) + Cl₂(g) → 2HCl(g) + 44 kcal
Vapour pressure of CCl₄ at 25oC is 143 mm Hg. 0.5 gm of a non-volatile solute (mol.wt.65) is dissolved in 100 ml of CCl₄. Find the vapour pressure of the solution . (Density of CCl₄=1.58 g/cm3).
50 ml of a gas A diffuse through a membrane in the same time as for the diffusion of 40 ml of a gas B under identical pressure temperature conditions. If the molecular weight of A = 4, that of B would be
When 10 g of 90% pure limestone is heated completely, the volume (in litres) of carbon dioxide liberated at STP is
The are bounded by the curve
with x-axis and the ordinates at x = 2 and x = 4 is
The centre and radius of the circle with the segment of the line x+y=1 cut of by the coordinate axes as diameter are
The value of (1 - ω + ω2)(1 - ω2 + ω6), where ω,ω2 are cube roots of unity ,is
The degree of the differential equation d2y/dx2+(dy/dx)3+6y=0 is
Differential of log(1-√x)sin⁻1(1-√x) w.r.t. 22(1-√x) at x=(1/4) is equal to
The sum of (12.2)/1! + (22.3)/2! + (32.4)/3! + (42.5)/4! + ..... will be
Equation of the tangent to the hyperbola 2x2 - 3y2 = 6 which is parallel to the line y = 3x + 4 is
The area bounded by the curve
x = at2, y = 2at and the X-axis is 1 ≤ t ≤ 3 is
The area bounded by the curve y2 = 9x and the lines x = 1, x = 4 and y = 0 in the first quadrant is
x + 2y + 3z = 1
x - y + 4z = 0
2x + y + 7z = 1 have
For all real x, the minimum value of [(1-x+x2)/(1+x+x2)] is
If bisectors of lines x2 - 2pxy - y2 = 0 is x2 - 2qxy - y2, then
The equation of the tangent to the parabola y2=16x which is ⊥ to the line y=3x+7 is
A box contains 10 good articles and 6 with defects. One item is drawn at random. The probability that it is either good or has a defect is
If one root of the equation x2 = px + q is reciprocal of the other, then the correct relationshup is :
The fourth, seventh and tenth terms of a G.P. are p, q and r respectively, then
The fourth ,seventh and tenth of a G.P. are p,q,r respectively then
If A = [a,b], B = [c,d], C = [d,e] then {(a,c), (a,d),(a,e),(b,c),(b,d),(b,e)} is equal to
The point on the curve where the normal to the curve 9y2 = x3 makes equal intercepts with the axes is
The direction ratios of the line which is perpendicular to the lines (x - 7)/2 = (y + 17)/-3 = (z - 6)/1 and (x + 5)/1 = (y + 3)/2 = (z - 4)/-2 are
The projections of a line segment on the coordinate are 12, 4 and 3 respectively. The length of the line segment is
The smallest values of θ satisfying the equation √3 cot θ + tan θ = 4 is