MCQ
The value of photoelectric current depends :
  • A
    Only on the intensity of light
  • On both the frequency of light and the distance between the source and the metal.
  • C
    On the work function of metal
  • D
    All of the above

Answer

Correct option: B.
On both the frequency of light and the distance between the source and the metal.
(B) - On both the frequency of light and the distance between the source and the metal.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Doppler's effect is sound in addition of relative velocity between source and observer, also depends while source and observer or both are moving. Doppler's effect in light depend only on the relative velocity of source and observer. The reason of this is.

According to Einstein's photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is

(a)

(b)

(c)

(d)

The capacity of a parallel plate condenser is 15μF, when the distance between its plates is 6 cm. If the distance between the plates is reduced to 2 cm, then the capacity of this parallel plate condenser will be

(a) 15 μF               

(b) 30 μF

(c) 45 μF

(d) 60 μF

If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be:
Two files lines can ____.
The separation between the plates of a charged parallel-plate capacitor is increased. Which of the following quantities will change?
  1. Charge on the capacitor.
  2. Potential difference across the capacitor.
  3. Energy of the capacitor.
  4. Energy density between the plates.

At any instant the ratio of the amount of radioactive substances is 2 : 1. If their half lives be respectively 12 and 16 hours, then after two days, what will be the ratio of the substances

(a) 1 : 1

(b) 2 : 1

(c) 1 : 2

(d) 1 : 4

A perpendicular material is place in a magnetic fields. Consider the following statemetns:
  1. If the magnetic field is increased, the magnetization is increased.
  2. If the temperature is increased, the magnetization is increased.
    Which of the following is found in the UV region of the spectrum?

    Half life of a radioactive element is 10 days. The time during which quantity remains 1/10 of initial mass will be

    (a) 100 days

    (b) 50 days

    (c) 33 days

    (d) 16 days