CBSE Class 11 Physics Questionbank

The SI unit of solid angle is:

A car accelerates uniformly from rest to $20\ \mathrm{m/s}$ in 5 s. Find its acceleration (in $\mathrm{m/s^2}$).

A projectile is launched with fixed speed. Its horizontal range is maximum at a launch angle of:

The impulse delivered to a body equals its change of:

A spring of stiffness $200\ \mathrm{N/m}$ is compressed by $0.1$ m. Find the stored elastic energy (in J).

A ring and a disc of equal mass and radius roll down an incline from rest. Which reaches the bottom first?

The escape speed from the surface of the Earth is approximately:

Find the gauge pressure (in Pa) at a depth of 10 m in water. [Take $\rho = 1000\ \mathrm{kg/m^3}$, $g = 10\ \mathrm{m/s^2}$]

The SI unit of thermal conductivity is:

Assertion: In an isothermal process involving an ideal gas, the change in internal energy is zero.

Reason: The internal energy of an ideal gas depends only on its temperature.

At the same temperature, which gas has the highest rms speed?

An object in SHM has frequency 0.5 Hz. Find its time period (in s).

Two tuning forks of frequencies 256 Hz and 260 Hz are sounded together. The beat frequency heard is:

The dimensional formula of force is:

A transverse wave has wavelength 2 m and frequency 5 Hz. Find its speed (in m/s).

A spinning skater pulls her arms inward. What happens to her angular momentum and angular speed?