Question
A spherical black body with a radius of 8 cm radiates
450-watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watts would be:Solution
A cylindrical conductor of length L and radius R has its radius increasing linearly from R at one end to 2R at the other. A constant current I flows thr...
A spherical ball made of steel when dropped in mercury container will –
A block of mass 10 kg is on a horizontal table with friction coefficient μ = 0.2. A mass of 4 kg is suspended from a frictionless pulley attached to th...
When a passenger in a moving bus is suddenly thrown forward when the bus stops, this is explained by:
What is the current flowing through a 24 Ω resistor connected to a 12 V battery?
Which among the following nuclei is more stable based on neutron-to-proton ratio?
A beam of light consisting of two wavelengths, 600 nm and 420 nm, is used to obtain interference fringes in a Young’s double-slit experiment. Find...
Which of the following materials exhibits piezoelectric effect?
If a force is applied to two stationary objects with different masses for the same duration, what will be the same for both objects?
If the distance between two consecutive crests is L, then the wavelength is given by______.
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