MHT-CET Paper 2016 Physics Version 11

MHT-CET Paper 2016 Physics Version 11

For a gas R/Cv=0.4, where ‘R’ is the universal gas constant and ‘Cv’ is molar specific heat at constant volume. The gas is made up of molecules which are
(a) rigid diatomic
(b) monoatomic
(c) non-rigid diatomic
(d) polyatomic

a

In vertical circular motion, the ratio of kinetic energy of a particle at highest point to that at lowest point is
(a) 5
(b) 2
(c) 0.5
(d) 0.2

d

Two wires having same length and material are stretched by same force. Their diameters are in the ratio 1 : 3. The ratio of strain energy per unit volume for these two wires (smaller to larger diameter) when stretched is
(a) 3 : 1
(b) 9 : 1
(c) 27: 1
(d) 81 : 1

d

A ring and a disc roll on the horizontal surface without slipping with same linear velocity. If both have same mass and total kinetic energy of the ring is 4J then total kinetic energy of the disc is
(a) 3 J
(b) 4 J
(c) 5 J
(d) 6 J

a

When the observer moves towards the stationary source with velocity, ‘V1’, the apparent frequency of emitted note is ‘F1’. When the observer moves away from the source with velocity ‘V1’, the apparent frequency is ‘F2’. If ‘V’ is the velocity of sound in air and F1/F2=2 then V/V1=?
(a) 2
(b) 3
(c) 4
(d) 5

b

Wire having tension 225N produces six beats per second when it is tuned with a fork. When tensioin changes to 256 N, it is tuned with the same fork, the number of beats remain unchanged. The frequency of the fork will be
(a) 186 Hz
(b) 225 Hz
(c) 256 Hz
(d) 280 Hz

a

Assuming the expression for the pressure exerted by the gas on the walls of the container, it can be shown that pressure is
(a) (1/3)rd kinetic energy per unit volume of a gas
(b) (2/3)rd kinetic energy per unit volume of a gas
(c) (3/4)th kinetic energy per unit volume of a gas
(d) (3/2) x kinetic energy per unit volume of a gas

b

Two strings A and B of same material are stretched by same tension. The radius of the string A is double the radius of string B. Transverse wave travels on string A with speed ‘VA’ and on string B with speed ‘VB’. The ration VA/VB is
(a) 1/4
(b) 1/2
(c) 2
(d) 4

b

When open pipe is closed from one end then third overtone of closed pipe is higher in frequency by 150 Hz than second overtone of open ripe. The fundamental frequency of open end pipe will be
(a) 75 Hz
(b) 150 Hz
(c) 225 Hz
(d) 300 Hz

d

A disc of radius ‘R’ and thickness R/6 has moment of inertia ‘I’ about an axis passing through its centre and perpendicular to its plane. Disc is melted and recast into a solid sphere. The moment of inertia of a sphere about its diameter is
(a) 1/5
(b) 1/6
(c)1/32
(d) 1/64

a

Which of the following quantity does NOT change due to damping of oscillations ?
(a) Angular frequency
(b) Time period
(c) Initial phase
(d) Amplitude

c

If the end correction of an open pipe is 0.8 cm then the inner radius of that pipe will be
(a) (1/3) cm
(b) (2/3) cm
(c) (3/2) cm
(d) 0.2 cm

b

Two particles of masses ‘m’ and ‘9m’ are separated by a distance ‘r’. At a point on the line joining them the gravitational field is zero. The gravitational potential at that point is (G=Universal Constant of gravitation)
(a) (-4Gm)/r
(b) (-8Gm)/r
(c) (-16 Gm)/r
(d) (-32 Gm)/r

c

A black rectangular surface of area ‘A’ emits energy ‘E’ per second at 27 degree Celsius. If length and breadth are reduced to one third of initial value and temperature is raised to 327 degree Celsius then energy emitted per second becomes
(a) 4E/9
(b) 7E/9
(c) 10E/9
(d) 16E/9

d

A liquid drop having surface energy ‘E’ is spread into 512 droplets of same size. The final surface energy of the droplets is
(a) 2E
(b) 4E
(c) 8E
(d) 12 E

c