Physics questions
20027 published questions with worked solutions.
- The amplitude of 15 sin(1000 ) is modulated by10 sin(4 ) signal. The amplitude modulated signal contains frequencies of A. 500 Hz...Not in JEE or NEET syllabus
- An engine operating between the boiling and freezing points of water will have A. Efficiency more than 27% B. Efficiency less...
- Three forces F_1 = 10 N, F_2 = 8 N, F_3 = 6 N are acting on a particle of mass 5 kg. The forces F_2 and F_3 are applied...
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : If an...
- Given below are two statements: Statement I : When the frequency of an a.c source in a series LCR circuit increases, the current...
- A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. The number of spectral lines emitted will be:
- A ball is thrown vertically upward with an initial velocity of 150 m/s. The ratio of velocity after 3 s and 5 s is x+1 x . The...
- Given below are two statements: Statement I: A truck and a car moving with same kinetic energy are brought to rest by applying...
- 64 identical drops each charged upto potential of 10mV are combined to form a bigger drop. Thepotential of the bigger drop will...
- A common example of alpha decay is ^ 238 _ 92 U ^ 234 _ 90 Th+_2He^4+Q Given: ^ 238 _ 92 U=238.05060u ^ 234 _ 90 Th=234.04360u...
- Glycerin of density 1.25 10^3kgm^ -3 is flowing through the conical section of pipe. The area of cross-section of the pipe at its...
- A conducting circular loop is placed in a uniform magnetic field of 0.4 T with its plane perpendicular to the field. Somehow, the...
- A compass needle oscillates 20 times per minute at a place where the dip is 30° and 30 times per minute where the dip is 60°. The...Not in JEE Advanced syllabus
- Two convex lenses of focal length 20 cm each are placed coaxially with a separation of 60 cm between them. The image of the...
- To maintain a speed of 80 km/h by a bus of mass 500 kg on a plane rough road for 4 km distance, the work done by the engine of...
- For a certain organ pipe, the first three resonance frequencies are in the ratio 1:3:5 respectively. If the frequency of fifth...
- For rolling spherical shell, the ratio of rotational kinetic energy and total kinetic energy is x 5 . The value of x is...
- Given below are two statements: Statement I : Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the...
- The distance travelled by an object in time t is given by s = (2.5)t^2. The instantaneous speed of the object at t = 5 s will be :
- A 10 charge is divided into two parts and placed at 1 cm distance so that the repulsive force between them is maximum. The...