Which of the following is true for a photosensitive material? (a) All materials shows photosensi...

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Which of the following is true for a photosensitive material?
(a) All materials shows photosensitivity to some or more extent
(b) Different photosensitive materials have same sensitivity
(c) Same photosensitive substance gives different response to light of different wavelengths
(d) All photosensitive materials give response to green light
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