Physics questions
20027 published questions with worked solutions.
- A magnet hung at 45° with magnetic meridian makes an angle of 60° with the horizontal. The actual value of the angle of dip isNot in JEE Advanced syllabus
- A microscope was initially placed in air (refractive index 1). It is then immersed in oil (refractive index 2). For a light whose...
- An electron (mass m) with an initial velocity v = v_ 0 i (v_ 0 = 0) is moving in an electric field E = E_ 0 i (E_ 0 > 0) where E_...
- What is the half-life period of a radioactive material if its activity drops to 1/16th of its initial value in 30 years?
- At a particular station, the TV transmission tower has a height of 100 m. To triple its coverage range, height of the tower...Not in JEE or NEET syllabus
- The one division of main scale of Vernier callipers reads 1mm and 10 divisions of Vernier scale is equal to the 9 division on...
- Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between...
- To light, a W, 100 V lamp is connected, in series with a capacitor of capacitance (50/( x )) F, with 200 V, 50 Hz AC source. The...
- A 1 m long copper wire carries a current of 1 A. If the cross section of the wire is 2.0 mm^ 2 and the resistivity of copper is...
- A mass 0.9 kg, attached a horizontal spring, executes SHM with an amplitude A_ 1 . When this mass passes through its mean...
- A ball of mass m is thrown vertically upward. Another ball of mass 2 m is thrown at an angle with the vertical. Both the balls...
- The SI unit of a physical quantity is pascal-second. The dimensional formula of this quantity will be :
- When a ball is dropped into a lake from a height 4.9 m above the water level, it hits the water with a velocity v and then sinks...
- One end of a massless spring of spring constant k and natural length l_ 0 is fixed while the other end is connected to a small...
- A stone tied to a string of length L is whirled in a vertical circle with the other end of the string at the centre. At a certain...
- According to kinetic theory of gases, A. The motion of the gas molecules freezes at 0°C B. The mean free path of gas molecules...
- A lead bullet penetrates into a solid object and melts. Assuming that 40% of its kinetic energy is used to heat it, the initial...
- The equation of a particle executing simple harmonic motion is given by x = (t + 1/3) m. At t = 1s, the speed of particle will be-
- If L, C and R are the self-inductance, capacitance and resistance respectively, which of the following does not have the...
- Given below are two statements: Statement I : A time varying electric field is a source of changing magnetic field and...