Mock MHTCET 2020
Physics(50)+Chemistry(50)+Maths(100)=200 Marks
TIme : 3Hrs
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* Important Instructions:
1) The Physics Test is of 45 min duration.
2) The Test consist of 50 questions and the maximum marks are 50.
3) Each question is alloted 1(one mark) for each correct response.
1.The path length of oscillation of simple pendulum of length 1 metre is 16 cm. Its maximum velocity is ? (g = π² m/s2)
1 point
2π cm/s
4π cm/s
8π cm/s
16π cm/s
Clear selection
2. A transistor is used as a common emitter amplifier with a load resistance 2 KΩ. the input resistance is 150 Ω. Base current is changed by 20 μA which results in a change in collector current by 1.5 mA. The voltage gain of the amplifier is
1 point
900
1000
1100
1200
Clear selection
3. A circular coil carrying current ‘I’ has radius ‘R’ and magnetic field at the centre is ‘B’. At what distancefrom the centre along the axis of the same coil, the magnetic field will be B/8 ?
1 point
R√2
R√3
3R
2R
Clear selection
4. An alternating voltage e = 200√2 sin(100 t) volt is connected to μF capacitor through a.c. ammeter.The reading of ammeter is
1 point
5 mA
10 mA
15 mA
20 mA
Clear selection
5. The angle made by incident ray of light with the reflecting surface is called
1 point
glancing angle
angle of incidence
angle of deviation
angle of refraction
Clear selection
6. If numerical aperture of a microscope is increased then its
1 point
resolving power remains constant
resolving power becomes zero
limit of resolution is decreased
limit of resolution is increased
Clear selection
7. If Mz = magnetization of a paramagnetic sample, B = external magnetic field, T = absolute temperature, C = curie constant then according to Curie’s law in magnetism, the correct relation is
1 point
Mz=t/cb
Mz=tb/c
C=M2B/T
C =T²/MzB
Clear selection
8. A metal wire of density ‘p’ floats on water surface horizontally. If it is NOT to sink in water then maximum radius of wire is proportional to (T = surface tension of water, g =gravitational acceleration)
1 point
√(T/πpg)
√(πpg/T)
(T/πpg)
(πpg/T)
Clear selection
9. For a particle performing linear S.H.M., its average speed over one oscillation is (a = amplitude of S.H.M., n = frequency of oscillation)
1 point
2 an
4 an
6 an
8 an
Clear selection
10 .A conducting wire has length ‘L1’ and diameter ‘d1’. After stretching the same wire length becomes ‘L2’ and diameter ‘d2’. The ratio of resistances before and after stretching is
1 point
d4/2:d4/1
d4/1:d4/2
d2/4:d1/4
d4/2:d4/2
Clear selection
11. In a capillary tube having area of crosssection ‘A’, water rises to a height ‘h’. If crosssectional area isreduced to 'A'/9 , the rise of water in the capillary tube is
1 point
4h
3h
2h
h
Clear selection
12. A string is vibrating in its fifth overtone between two rigid supports 2.4 m apart. The distance between successive node and antinode is
1 point
0.1 m
0.2 m
0.6 m
0.8 m
Clear selection
13.A square frame ABCD is formed by four identical rods each of mass ‘m’ and length ‘l’ This frame is in XY plane such that side AB coincides with Xaxis and side AD along Yaxis. The moment of inertia of the frame about Xaxis is
1 point
5ml²/3
2ml²/3
4ml²/3
ml²/3
Clear selection
14. Magnetic susceptibility for a paramagnetic and diamagnetic materials is respectively
1 point
small, positive and small, positive
large, positive and small, negative
small, positive and small, negative
large, negative and large, positive
Clear selection
15. The moment of inertia of a ring about an axis passing through the centre and perpendicular to its plane is ‘I’. It is rotating with angular velocity ‘Ω’. Another identical ring is gently placed on it so that their centres coincide. If both the rings are rotating about the same axis then loss in kinetic energy is
1 point
IΩ²/2
IΩ²/4
IΩ²/6
IΩ²/8
Clear selection
16. In a photocell, frequency of incident radiation is increased by keeping other factors constant (V> V0), the stopping potential
1 point
decreases
increases
becomes zero
first decreases and then increases
Clear selection
17. The expression for electric field intensity at a point outside uniformly charged thin plane sheet is (d is the distance of point from plane sheet)
1 point
independent of d
directly proportional to 1/d
directly proportional to d
directly proportional to d/2
Clear selection
18. When source of sound moves towards a stationary observer, the wavelength of sound received by him
1 point
decreases while frequency increases
remains the same whereas frequency increases
increases and frequency also increases
decreases while frequency remains the same
Clear selection
19. Heat energy is incident on the surface at the rate of 1000 J/min. If coefficient of absorption is 0.8 and coefficient of reflection is 0.1 then heat energy transmitted by the surface in 5 minutes is
1 point
100 J
500 J
300 J
900 J
Clear selection
20.Two metal wires ‘P’ and ‘Q’ of same length and material are stretched by same load. Their masses are in the ratio m1 : m2. The ratio of elongations of wire ‘P’ to that of ‘Q’ is
1 point
m2:m1
m1:m2
m1:m1
m2:m2
Clear selection
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