Class XI Physics Terminal Exam

• Physics Terminal Exam for Class XI Science on 15/10/2024.
• The exam is 50 marks and lasts for 2.30 hours.

Multiple Choice Questions

• For two vectors to be equal, they must have the same magnitude and direction.
• Gravitational acceleration is maximal at the Earth's center.
• The number 0.000325 contains 3 significant figures.
• Weight of a particle at the center of the Earth is zero.
• The maximum displacement of a particle is called amplitude.
• Dimensions of impulse are the same as momentum.
• Velocity of a wave does not change when the wave goes from one medium to another.

Very Short Answer Questions

• A significant figure is a digit that is reliably known.
• The Doppler Effect is the change in frequency of a wave in relation to an observer who is moving relative to the wave source.
• The SI unit for plane angle is the radian, and for solid angle is the steradian.
• Absolute error represents the uncertainty in a measurement and is the difference between the measured value and the true value.
• Planck's constant is 6.63 x 10^-34.
• To calculate the speed of sound given a frequency of 170 Hz and a wavelength of 2m: speed = frequency x wavelength.

Short Answer Questions

• Characteristics of a vector product include: it results in a vector perpendicular to the original vectors, it is anticommutative, its magnitude depends on the angle between the vectors, and it represents the area of the parallelogram formed by the vectors.