Model Questions- Physics #NEETUG2K18 Q1-Q5

AMC
#1

  1. For photoelectric emission, tungsten requires light of 2300 Å if light of 1800 Å wavelength is incident, then emission
    (a) Takes place
    (b) Don’t take place
    © May or may not take place
    (d) Depends on frequency.

  2. A type kept outside in sunlight bursts off after sometime because of
    (a) Increase in pressure
    (b) Increase in volume
    © Both (a) and (b)
    (d) None of these.

  3. For a wire of length 1, maximum change in length under streets condition is 2 mm. what is the change in length under same conditions when length of wire is halved?
    (a) 1 mm
    (b) 4 mm
    © 2 mm
    (d) 8 mm.

  4. Air is blown through a hole on a hole on a closed pipe containing liquid. Then the pressure will
    (a) Increase on sides
    (B) Increase downwards
    © Increase in all directions
    (D) Never increases.

  5. Light year is a unit of
    (a) Time
    (B) Speed
    © Distance
    (D) None of these