Model Questions- Physics #NEETUG2018 Q16-Q20

  1. Which of the following is not an example of perfectly inelastic collision?
    (a) A bullet fired into a block if bullet gets embedded into block (B) Capture of electrons by an atom
    © A man jumping on to a moving boat
    (D) A ball bearing striking another ball bearing

  2. The length of second’s pendulum is 1 m on earth. If mass and diameter of the planet is doubled than that of earth, then length becomes
    (a) 1 m
    (B) 2 m
    © 0.5 m
    (D) 4 m

  3. A hot and a cold body are kept in vacuum separated from each other. Which of the following cause decrease in temperature of the hot body?
    (a) Radiation
    (B) Convection
    © Conduction
    (D) Temperature remains unchanged

  4. When a tuning fork produces sound waves in air, which one of the following is same in the material of tuning fork as well as in air?
    (a) Wavelength
    (B) Frequency
    © Velocity
    (D) Amplitude

  5. A bomb explodes on the moon. How long will it take for the sound to reach the earth?
    (a) 10 s
    (B) 1000 s
    © 1 day
    (D) None of these