Mock MHT-CET 2020

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Mock MHT-CET 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

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 cross-section ‘A’, water rises to a height ‘h’. If cross-sectional area isreduced to 'A'/9 , the rise of water in the capillary tube is

1 point

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 X-Y plane such that side AB coincides with X-axis and side AD along Y-axis. The moment of inertia of the frame about X-axis 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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