List of top Physics Questions on Reflection Of Light By Spherical Mirrors asked in BITSAT

A spherical ball of mass 20 20 kg is stationary at the top of a hill of height 100 100 m. It rolls down a smooth surface to the ground, then climbs up another hill of height 30 30 m and finally rolls down to a horizontal base at a height of 20 20 m above the ground. The velocity attained by the ball is:
A simple pendulum doing small oscillations at a place R R height above the Earth's surface has a time period of T1=4 s T_1 = 4 \, {s} . T2 T_2 would be its time period if it is brought to a point which is at a height 2R 2R from the Earth's surface. Choose the correct relation [R R = radius of Earth]:
In a Young's double slit experiment, the intensities at two points, for the path difference λ4 \frac{\lambda}{4} and λ3 \frac{\lambda}{3} (λ \lambda being the wavelength of light used) are I1 I_1 and I2 I_2 respectively. If I0 I_0 denotes the intensity produced by each one of the individual slits, then I1+I2I0 \frac{I_1 + I_2}{I_0} is equal to:
A sonometer wire resonates with a given tuning fork forming standing waves with five antinodes between the two bridges when a mass of 9 kg9 \,kg is suspended from the wire. When this mass is replaced by a mass MM, the wire resonates with the same tuning fork forming three antinodes for the same positions of the bridges. The value of MM
An object is placed at a distance 20 cm20\, cm from the pole of a convex mirror of focal length 20 cm20\, cm. The image is produced at :