On this page we have uploaded MBOSE HSSLC Class 11 Question Paper for Physics released by www.mbose.in. The question paper provided here from Meghalaya State Board. Download the 2023 question paper pdf as well.
Meghalaya State Board has published subject wise question paper for this year Class 11 students in its official portal www.mbose.in. Here we have published Class 11 MBOSE question paper 2023-24 for Physics subject. For more information regarding Meghalaya HSSLC Class 11 2023 Exam Date, Exam Pattern, Time, Date, How to prepare follow our website.
Meghalaya Board (MBOSE) HSSLC Class 11 Question Papers – Physics Subject
Section – A – I
Multiple choice questions:
(1) A structural steel rod of Young’s modulus 2.0 ×1011 N m–2 has a radius and length of 10 mm and 1m, respectively. A 100 kN force stretches the rod along its length. The stress is.
(a) 3.18 × 108 Nm-2
(b) 3.18 × 109 Nm-2
(c) 3.18 × 1010 Nm-2
(d) 3.18 × 106 Nm-2
(2) A circular disc has mass M and radius R. The moment of inertia about its diameter is
(a) MR2
(b) MR2/2
(c) MR2/4
(d) MR2/6
(3) A body of mass 2 kg travels according to the law x(t) = pt + qt2 + rt3, where p = 3 ms-1, q = 4ms-2 and r = 5ms-3. The force acting on the body at t = 2 seconds is
(a) 68N
(b) 134N
(c) 158N
(d) 136N
(4) The root mean square speed of the molecules of a gas with molar mass M at absolute temperature T is 300 ms–1. If the molar mass is doubled and the absolute temperature is halved, what will be the root mean square speed of the molecules?
(a) 300 ms-1
(b) 150 ms-1
(c) 75 ms-1
(d) 50 ms-1
(5) A device thate works on Bernoulli’s theorem is the
(a) Voltmeter
(b) Screw gauge
(c) Venturi-meter
(d) Spherometer.
Section – A – II
Very short answer type question
6.) Define Poisson’s ratio in solids.
7.) State the law of equipartition of energy for a gas system.
(8) 5.74 g of a substance occupies 1.2 cm3. Express its density in proper significant figures.
10.) State second law of thermodynamics.
Section – B
Short answer type questions:
11.) Mention two properties of a conservative force.
12.) On an average a human heart is found to beat 75 times in a minute. Calculate its frequency and period.
13.) State Pascal’s law for fluids. Name one application.
(14) Either
Consider a simple pendulum having a bob attached to a string that oscilates under the action of the force of gravity. Suppose that the time period of oscillation of the simple pendulum depends on its length (l), the mass of the bob (m) and acceleration due to gravity (g). Using the method of dimensions, derive the expression for the time period.
Or
Suppose the magnitude of the centripetal force (F) that acts on an object moving uniformly in a circle depends upon the mass (m), velocity (v) of the object and radius of the circle (r). Using the method of dimensions, derive the expression for the force.
(16) A force F when applied on a block, placed on a floor, at an angle of 60 ° to the direction of displacement of 5m, performs 150J of work. Find the force applied. What is the work done against?
(17) Explain why small drops of water are spherical in shape.
Section – C
Short answer type questions:
(18) A wave travelling along a string is described by y (x, t) = 0.005 sin (80.0x – 3.0t), in which the numerical constants are SI Units (0.005 m, 80.0 rad m-1 and 3.0 rad s-1). Calculate
(a) Wavelength of the wave
(b) Frequency of the wave and
(c) Displacement y (x, t) at a distance x = 30.0 cm and time t = 20 seconds.
19.) State Kepler’s laws of planetary motion.
20.) Define the terms: (i) isothermal process, (ii) isobaric process, (iii) adiabatic process.
21.) Consider an isolated system of two particles that will collide once with each other at any time. Show that the system obeys the law of conservation of linear momentum.
(23) Write down Hooke’s law for elastic materials. The average depth of Indian Ocean is about 3000m. Calculate the fractional compression of water at the bottom of the ocean.
24.) Either
Derive an expression for the kinetic energy of a rigid body rotating with uniform angular velocity ω and hence define moment of inertia.
Or
25.) Obtain an expression for acceleration due to gravity at a depth d below the surface of the earth.
26.) When two bodies make a head-on elastic collision, show that the coefficient of restitution equals 1.
Section – D
Value based question
27.) In our daily lives, we come across three distinct modes of heat transfer:
Conduction, Convection and Radiation.
(i) From your experiences, explain with an example the following mechanisms.
(a) Conduction
(b) Convection and
(c) Radiation
(ii) What is meant by black body radiation?
Section – E
Long answer type questions
(28) Either
Why the projectile only has constant downward acceleration? Obtain the expressions for maximum height and time of ascent or time of rise for a projectile.
Or
Why do we need banking for a curved road? Obtain an expression for maximum speed that a car can safely travel on a curved road banked at an angle θ.
29.) Either
Show that the total mechanical energy of a particle executing simple harmonic motion under a conservative force is independent of time.
Or
Two identical sinusoidal waves have the same angular frequency, wavelength and amplitude but, their phase difference is ⌀ are travelling along a stretched string in the positive direction of the x – axis. Using the principle of superposition of waves, show the waves will give rise to another sinusoidal wave. What happen when ⌀ = π?
(30) Either
(a) Define gravitational potential energy.
(b) Derive an expression for the gravitational potential energy of a body at any height h above the surface of the earth.
Or
(a) Derive an expression for the escape velocity of a body from the surface of the earth.
(b) Calculate the numerical value of escape velocity of a satellite of mass 1000 kg from the surface of the earth. Conclude your result.