List of top Questions asked in BCECE- 2022

The pattern is observed in which experiment?

The resolving power of a telescope is directly proportional to:

Young's double slit experiment is first performed in air and then in a medium other than air. It is found that the 9th bright fringe in the medium lies where the 5th dark fringe lies in the air, then the refractive index of the medium is:

The velocity of light in a medium is √3\(\times\)10⁸m/s. The polarizing angle of incidence is:

A 100-W bulb and 4 25-W bulbs are made for the same voltage. They have filaments of the same length and material. The ratio of the diameter of the 100-W bulb to that of the 25-W bulb is:

This compound has both ionic and covalent bonds:

Which one is an amphoteric oxide:

A baby cools from 50°C to 40°C in 5 min. The surrounding temperature is 20°C. In what further time (in minutes) will it cool to 30°C?

A,B and C are voltmeters of resistance R, \(\frac{3}{2}R\) and 3R respectively. When some potential difference is applied between X and Y, the voltmeters readings are V_A, V_B and V_C respectively. Then:

A plane electromagnetic wave of wave interface 10W/m² strikes a small mirror of area 20 cm², held perpendicular to the approaching wave. The radiation force on the mirror will be:

When two mutually perpendicular alternating magnetic field superimposed on each other, the resulting field is: