Physics questions
20027 published questions with worked solutions.
- Light travels a distance x in time t_1 in air and 10x in time t_2 in another denser medium. What is the critical angle for this...
- An electric dipole is placed at an angle of 30° with an electric field of intensity 2 10^ 5 N C^ -1 . It experiences a torque...
- Let a wire be suspended from the ceiling (rigid support) and stretched by a weight W attached at its free end. The longitudinal...
- In hydrogen spectrum, the shortest wavelength in the Balmer series is . The shortest wavelength in the Bracket series is :
- The temperature of a gas is -50^ . To what temperature the gas should be heated so that the rms speed is increased by 3 times?
- A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent. The force that acts...
- The angular acceleration of a body, moving along the circumference of a circle, is :
- Given below are two statements: Statement I : Photovoltaic devices can convert optical radiation into electricity. Statement II :...Not in JEE Advanced syllabus
- If E d S=0 over a surface, then :
- The magnetic energy stored in an inductor of inductance 4 carrying a current of 2 A is :
- In a series LCR circuit, the inductance L is 10 mH, capacitance C is 1 and resistance R is 100 . The frequency at which resonance...
- The minimum wavelength of X-rays produced by an electron accelerated through a potential difference of V volts is proportional to...
- The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are :
- For Young's double slit experiment, two statements are given below: Statement I : If screen is moved away from the plane of...
- A bullet is fired from a gun at the speed of 280 m s^ -1 in the direction 30° above the horizontal. The maximum height attained...
- A Carnot engine has an efficiency of 50% when its source is at a temperature 327^ . The temperature of the sink is :
- The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly : (surface tension of soap...
- The half life of a radioactive substance is 20 minutes. In how much time, the activity of substance drops to ( 1 16 )^ th of its...
- The potential energy of a long spring when stretched by 2 cm is U. If the spring is stretched by 8 cm, potential energy stored in...
- Two bodies of mass m and 9m are placed at a distance R. The gravitational potential on the line joining the bodies where the...