MCQ
The colour coding on a carbon resistor is shown in the given figure. The resistance value of the given resistor is:


- A$(5700 \pm 285) \,\Omega$
- B$(7500 \pm 750) \,\Omega$
- C$(5700 \pm 375)\,\Omega$
- ✓$(7500 \pm 375) \,\Omega$

${R}=(7500 \pm 375)\, \Omega$
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Reason : Objective lens of large diameter collects more light.

$(I)$ Photoelectrons are emitted as soon as the metal is exposed to light.
$(II)$ There is a minimum frequency below which no photo-current is observed.
$(III)$ The stopping potential is proportional to the frequency of light.
$(IV)$ The photo-current varies linearly with the intensity of the light.
Which of the above statements indicate that light consists of quanta (photons) with energy proportional to frequency?