STANDARD Physics Class 11 Questions

"Two systems in thermal equilibrium with a third system separately are in thermal equilibrium with each other." This statement is

Inertia is that property of a body by virtue of which the body is

Which of the following orbits is a possible orbit for a planet?

Which of the following statements is incorrect?

Out of the following representing motion of a particle which represents SHM? 1. x = sin³ωt 2. x = 1 + ωt + ω²t² 3. x = cosωt + cos3ωt + cos5ωt 4. x = sinωt + cosωt

The centre of mass of a body

Which of the following conversions is correct?

Ultrasonic waves produced by a vibrating quartz crystal are

Match column I with column II.

The temperature which has same numerical value on Celsius and Fahrenheit scale is

Internal energy of an ideal gas depends upon

An air bubble of volume 1.0 cm³ rises from the bottom of a lake 40 m deep at a temperature of 12°C. To what volume does it grow when it reaches the surface which is at a temperature of 35°C?

There is a hole in the middle of a copper plate. When heating the plate, diameter of hole would

The numerical ratio of distance to displacement is

Kepler's second law is a consequence of

When a speeding bus stops suddenly, passengers are thrown forward from their seats because

Pressure at a point inside a liquid does not depend on

The equation of a progressive wave is given by: y = 5 sin(100 πt − 0.4πx) where y and x are in m and t is in s. (1) The amplitude of the wave is 5 m. (2) The wavelength of the wave is 5 m. (3) The frequency of the wave is 50 Hz. (4) The velocity of the wave is 250 m s⁻¹. Which of the following statements are correct?

Which of the following is not a characteristic of simple harmonic motion?

The work-energy theorem states that the change in

Fluids can develop

Three particles of masses 1 kg, \( \frac{3}{2} \) kg, and 2 kg are located at the vertices of an equilateral triangle of side a. The x, y coordinates of the centre of mass are

In the Geiger-Marsden scattering experiment, in case of head-on collision the impact parameter should be

Which of the following is not a path function?

A progressive wave is represented by y = 5sin (100πt − 2πx) where x and y are in m and t is in s. The maximum particle velocity is

The areal velocity and the angular momentum of the planet are related by which of the following relations? (where mₚ is the mass of the planet)

A raindrop of mass 1 g falling from a height of 1 km hits the ground with a speed of 50 m s⁻¹. If the resistive force is proportional to the speed of the drop, then the work done by the resistive force is (Take g = 10 m s⁻²)

A car is moving along a straight line OP as shown in the figure. It moves from O to P in 18 s and returns from P to Q in 6s. Which of the following statement is not correct regarding the motion of the car?

A constant force acting on a body of mass of 5 kg change its speed from 5 m s⁻¹ to 10 m s⁻¹ in 10 s without changing the direction of motion. The force acting on the body is

The ratio of one micron to one nanometre is

The breaking stress of a wire depends upon

If a simple harmonic motion is represented by \( \frac{d^2x}{dt^2} + cx = 0 \), its time period is

For the travelling harmonic wave y(x, t) = 2 cos2π(10t − 0.008 x + 0.35) where x and y are in cm and t is in s. The phase difference between oscillatory motion of two points separated by a distance of 0.5 m is

A planet revolves around the sun in an elliptical orbit. The linear speed of the planet will be maximum at

An electric heater supplies heat to a system at a rate of 120 W. If system performs work at a rate of 80 J s⁻¹, the rate of increase in internal energy is

If x, v and a represent the displacement, the velocity and the acceleration of a particle executing simple harmonic motion of time period T then which of the following does not change with time?

A bullet of mass 40 g moving with a speed of 90 m s⁻¹ enters a heavy wooden block and is stopped after a distance of 60 cm. The average resistive force exerted by the block on the bullet is

A body of mass 4 kg is moving with momentum of 8 kg m s⁻¹. A force of 0.2 N acts on it in the direction of motion of the body for 10 s. The increase in kinetic energy is

In a particular system the units of length mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. The unit of force in this system will be equal to

According the Hooke’s law of elasticity. If stress is increased, the ratio of stress to strain

The graph of the total number of α-particles scattered at different angles in a given interval of time for α-particle scattering in the Geiger-Marsden experiment is given by

Statement-1: If there is no external torque on a body about its centre of mass, then the velocity of the centre of mass remains constant. Statement-2: The linear momentum of an isolated system remains constant.

Figure shows elliptical orbit of a planet P about the sun S. The shaded area SCD is twice the shaded area SAB. If t₁ is the time for the planet to move from C to D and t₂ is the time to move from A to B, then

A cyclist moving on a circular track to radius 40 m completes half a revolution in 40 s. Its average velocity is

Two simple harmonic motions are represented by the equations, \( y_1 = 10\sin\left(\frac{\pi}{4}(12t + 1)\right) \), \( y_2 = 5(\sin 3\pi t + \sqrt{3}\cos 3\pi t) \). The ratio of their amplitudes is

An ideal gas undergoing a change of state from A to B through four different paths I, II, III and IV as shown in the P-V diagram that lead to the same change of state, then the change in internal energy is

Two waves are represented by y₁ = a sin(ωt + kx + 0.57) and y₂ = a cos(ωt + kx). The phase difference between the two waves is:

A body under the action of a force F = 6î - 8ĵ N acquires an acceleration of 5 m s⁻². The mass of the body is

The volume occupied by an atom is greater than the volume of the nucleus by a factor of about

A vessel has 6 g of oxygen at pressure P and temperature 400 K. A small hole is made in it so that oxygen leaks out. How much oxygen leaks out if the final pressure is \( \frac{P}{2} \) and temperature 300 K?