Which of the following statements is not correct?
(A) Photographic plates are sensitive to infrared rays
(B) Photographic photos are sensitive to ultraviolet rays
(C) infrared rays are invisible but can cast shadows like visible light
(D) infrared photons have more energy than photons of visible light

State the approximate range of wavelength associated with (a) ultraviolet rays. (b) visible light and (c) infrared rays

Give one use each of (a) microwaves, (b) ultraviolet radiations, (c) infrared radiations, and (d) gamma rays.

Electromagnetic waves used as a diagnostic tool in medicine are (A) X-rays (B) ultraviolet rays (C) infrared radiation (D) ultrasonic waves

Which of the following statement is // are correct about the refraction of light from a plane surface when light rays is incident in denser medium. [ C is critical angle ]

Which is the correct order of wave number of the following radiations: infrared, ultraviolet, X-rays and visible light?

Which of the following solar radiations pass through the atmosphere of earth ? X-rays, ultraviolet rays, visible light rays, infrared radiation.

Which of the following statements are correct ? (i) When an animal hide, which has negatively charged particles , is soaked in tannin, which contains positively charged colloidal particles, mutual coagulation does not take place. (ii) Photographic films are prepared by coating an emulsion of the light sensitive silver bromide in gelatin over glass plates or celluloid films. (iii) Latex is a colloidal solution of rubber particles which are negatively charged. (iv) In Cottrell precipitator , the smoke , before it comes out from the chimney, is led through a chamber containing plates having a charge opposite to that carried by smoke particles. The particles on coming in contact with these plates acquire some charge and do not get precipitated .

In a hydrogen like sample two different types of photons A and B are produced by electronic transition. Photon B has its wavelength in infrared region. If photon A has more energy than B, then the photon may belong to the region:

In electromagnetic radiation, which of the following,…… rays has greater wavelength than visible light ?

The diagram shows the structure of a fungal cell with different parts labelled as A,B,C and D. Which of the following statements are true with regard to the fungal cell structive? (i) A contains mucopolysaccharides which are also present in exoskeleton of insects and crustaceans. (ii) D are usually more than one in number in case of aseptate hyphae. (iii) Carotenes and xanthophylls are present in C, which harvest light energy for photosynthesis. (iv) B is the reverse food material, usually stored in the form of starch and oil.