Given below are two statements :
Statement I: An elevator can go up or down with uniform speed when its weight is balanced with the tension of its cable
Statement II: Force exerted by the floor of an elevator on the foot of a person standing on it is more than his/her weight when the elevator goes down with increasing speed
In the light of the above statements, choose the correct answer from the options given below:
Match List I with List II
Choose the correct answer from the options given below.
The maximum potential energy of a block executing simple harmonic motion is $25 J$ A is amplitude of oscillation At $A / 2$, the kinetic energy of the block is
A free neutron decays into a proton but a free proton does not decay into neutron. This is because
In which condition EMF will be induced in loop. Situation-S1: A loop is moving with uniform velocity in a uniform magnetic field perpendicular to its plane. Situation-S2: A loop is moving with non-uniform velocity in a uniform magnetic field perpendicular to its plane. Situation-S3: A loop is rotating about its diameter in a uniform magnetic field. Situation-S4: Area of loop is changing in a uniform magnetic field.
Under the same load, wire A having length $50 m$ and cross section $25 \times 10^{-5} m ^2$ stretches uniformly by the same amount as another wire $B$ of length $60 m$ and a cross section of $30 \times 10^{-5}$ $m ^2$ stretches The ratio of the Young's modulus of wire $A$ to that of wire $B$ will be :
