Which of the following are the properties of photons?
(A) The rest mass of a photon is zero
(B) Each photon has a definite energy and an indefinite linear momentum
(C) A photon may collide with a material particle and the total energy and the total momentum remain conserved in such a collision
(D) Photons are deflected by electric and magnetic fields
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An LCR series circuit, with \( L = \frac{2}{\pi} \text{ H} \), \( R = 100 \text{ } \Omega \) and \( C = \frac{100}{\pi} \text{ } \mu\text{F} \) is connected across a source of 200 V, 50 Hz as shown. The peak potential difference between A and B is:

The nuclear force is a short range force, this can be explained by fact that the binding energy per nucleon versus mass number curve:

Arrange the following electromagnetic waves in the increasing order of their wavelength.
(A) X-rays
(B) Radio waves
(C) Gamma rays
(D) Microwaves
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On which of the following factors angular fringe width does not depend?

The binding energy per nucleon is 1.1 MeV for \({ }_1^2 H\) and 7.0 MeV for \({ }_2^4 He\). The energy released in the given fusion reaction will be:
\({ }_1^2 H+{ }_1^2 H \rightarrow{ }_2^4 He\)

Match List-I with List-II

List - I (Observation)	List - II (Light related phenomenon)
(A) Blue colour of sky	(I) Dispersion
(B) Seven colours obtained from prism	(II) Refraction
(C) Bending of pencil dipped in water	(III) Scattering
(D) Alternate bright and dark bands of equal thickness	(IV) Interference

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When a capacitor is subjected to a D.C. source it takes small time internal to get fully charged up. During this small time interval there is no passage of charge through dielectric, yet we use a term - displacement current. This term is used because :

Factors that do not affect Hardy-Weinberg equilibrium are:
(A). Genetic drift
(B). Mitosis
(C). Genetic recombination and natural selection
(D). Pleiotropy
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Read the following paragraph carefully and answer the given questions.
Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens, and the reactions studied. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Heroin, commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
Which one of the following drugs can not quickly reduce the symptoms of allergy?

The general solution of the differential equation \(x d y+\left(y-e^x\right) d x=0\) is :
where C is constant of integration

In humans, the fertilization takes place at -

Arrange the given organisms involved in a food chain in correct sequence ?
(A) Fish
(B) Phytoplankton
(C) Man
(D) Zooplankton
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