A person is suffering from chest pain, breathlessness, loss of body weight, persistent cough and produces blood stained sputum.Mention two means of its transmission.

A person is unable to see objects distinctly placed within 50 cm from his eyes. (a) Name the defect of vision the person is suffering from and list its two possible causes. (b) Draw ray diagram to show the defect in the above case. (c) Mention the type of lens used by him for the correction of the defect and calculate its power. Assume that the near point for the normal eye is 25 cm. (d) Draw a labelled diagram for the correction of the defect in the above case.

(a) A particle is thrown from a height h horizontally towards a vertical wall with a speed v as shown in the figure. If the particle returns to the point of projection after suffering two elastic collisions, one with the wall and another with the ground, find the total time of flight. [Elastic collision means the velocity component perpendicular to the surface gets reversed during collision.] (b) Touching a hemispherical dome of radius R there is a vertical tower of height H = 4 R . A boy projects a ball horizontally at speed u from the top of the tower. The ball strikes the dome at a height (R)/(2) from ground and rebounds. After rebounding the ball retraces back its path into the hands of the body. Find u.

A light rod of length 2 m is suspended from the ceiling horizontally by means of two vertical wires of equal length tied to its ends. One of the wires is made of steel and is of cross section 0.1 cm^(2) . The other wire is a brass of cross section 0.2 cm^(2) . A weight is suspended from a certain point of the rod such that equal stress are produced in both the wires. Which of the following are correct?

A light rod of length 4.0 m is suspended from the ceiling horizontally by means of two vertical wire of equal length tied to its ends. One of the wires is made of steel and is of cross-section 10^(-3)m^(2) and the other is of brass of cross-section 2xx10^(-3)m^(2) . Find out the position along the rod at which a weight may be hung to produce equal stresses in both wires.

The chemicals used to treat diseases and to reduce the suffering from pain are known as drugs or medicines. The chemicals used in chemotherapy are classified according to their action. For example antipyretics are medicines used to lower the body temperature in high fever. The examples of antipyretics are para ethoxy acetamide and analgin. Analgesics are medicines which relieve pain. They are of two types. (i) Narcotics are medicines which relieve pain by producing sleep and unconsciousness. They are morphine, morphine diacetate (heroin) and codeine. They are habit forming (ii) None narcotic analgesics are not habit forming and do not usually induce sleep. They are aspirin, brufen and butazolidine. Antiseptics are medicines which kill or prevent the growth of micro-organisms. Antiseptics are also used to reduce odours arising out of bacterial decomposition on the surface of the body. They are 2% solution of phenol, dettol (a solution of terpineol and chloro-xylenol) savlon, bithional etc. Tranquillizers are medicine used to relieve mental tension and an anxiety. They act on the nervous system and induce sleep. They may antidepressants (to elevate mood) such as methedrine and vitalin, sedatives (relieve mental agitation and violence) such as diazopam, seconal, luminal and equanil. Antibiotics are medicines produced by micro-organisms such as fungi, bacteria and moulds and are used to kill other microorganisms. They are penicillin (Treat sore throat, bronchitis, pneumonia), streptomycin (active aginst tuberclosis, chloramphenicol treat typhoid, acute fever, urinary infection. Which of the following statements is false ?

The chemicals used to treat diseases and to reduce the suffering from pain are known as drugs or medicines. The chemicals used in chemotherapy are classified according to their action. For example antipyretics are medicines used to lower the body temperature in high fever. The examples of antipyretics are para ethoxy acetamide and analgin. Analgesics are medicines which relieve pain. They are of two types. (i) Narcotics are medicines which relieve pain by producing sleep and unconsciousness. They are morphine, morphine diacetate (heroin) and codeine. They are habit forming (ii) None narcotic analgesics are not habit forming and do not usually induce sleep. They are aspirin, brufen and butazolidine. Antiseptics are medicines which kill or prevent the growth of micro-organisms. Antiseptics are also used to reduce odours arising out of bacterial decomposition on the surface of the body. They are 2% solution of phenol, dettol (a solution of terpineol and chloro-xylenol) savlon, bithional etc. Tranquillizers are medicine used to relieve mental tension and an anxiety. They act on the nervous system and induce sleep. They may antidepressants (to elevate mood) such as methedrine and vitalin, sedatives (relieve mental agitation and violence) such as diazopam, seconal, luminal and equanil. Antibiotics are medicines produced by micro-organisms such as fungi, bacteria and moulds and are used to kill other microorganisms. They are penicillin (Treat sore throat, bronchitis, pneumonia), streptomycin (active aginst tuberclosis, chloramphenicol treat typhoid, acute fever, urinary infection. Medicine which is antibiotic is :

The chemicals used to treat diseases and to reduce the suffering from pain are known as drugs or medicines. The chemicals used in chemotherapy are classified according to their action. For example antipyretics are medicines used to lower the body temperature in high fever. The examples of antipyretics are para ethoxy acetamide and analgin. Analgesics are medicines which relieve pain. They are of two types. (i) Narcotics are medicines which relieve pain by producing sleep and unconsciousness. They are morphine, morphine diacetate (heroin) and codeine. They are habit forming (ii) None narcotic analgesics are not habit forming and do not usually induce sleep. They are aspirin, brufen and butazolidine. Antiseptics are medicines which kill or prevent the growth of micro-organisms. Antiseptics are also used to reduce odours arising out of bacterial decomposition on the surface of the body. They are 2% solution of phenol, dettol (a solution of terpineol and chloro-xylenol) savlon, bithional etc. Tranquillizers are medicine used to relieve mental tension and an anxiety. They act on the nervous system and induce sleep. They may antidepressants (to elevate mood) such as methedrine and vitalin, sedatives (relieve mental agitation and violence) such as diazopam, seconal, luminal and equanil. Antibiotics are medicines produced by micro-organisms such as fungi, bacteria and moulds and are used to kill other microorganisms. They are penicillin (Treat sore throat, bronchitis, pneumonia), streptomycin (active aginst tuberclosis, chloramphenicol treat typhoid, acute fever, urinary infection. Aspirin :

The chemicals used to treat diseases and to reduce the suffering from pain are known as drugs or medicines. The chemicals used in chemotherapy are classified according to their action. For example antipyretics are medicines used to lower the body temperature in high fever. The examples of antipyretics are para ethoxy acetamide and analgin. Analgesics are medicines which relieve pain. They are of two types. (i) Narcotics are medicines which relieve pain by producing sleep and unconsciousness. They are morphine, morphine diacetate (heroin) and codeine. They are habit forming (ii) None narcotic analgesics are not habit forming and do not usually induce sleep. They are aspirin, brufen and butazolidine. Antiseptics are medicines which kill or prevent the growth of micro-organisms. Antiseptics are also used to reduce odours arising out of bacterial decomposition on the surface of the body. They are 2% solution of phenol, dettol (a solution of terpineol and chloro-xylenol) savlon, bithional etc. Tranquillizers are medicine used to relieve mental tension and an anxiety. They act on the nervous system and induce sleep. They may antidepressants (to elevate mood) such as methedrine and vitalin, sedatives (relieve mental agitation and violence) such as diazopam, seconal, luminal and equanil. Antibiotics are medicines produced by micro-organisms such as fungi, bacteria and moulds and are used to kill other microorganisms. They are penicillin (Treat sore throat, bronchitis, pneumonia), streptomycin (active aginst tuberclosis, chloramphenicol treat typhoid, acute fever, urinary infection. Antiseptic action of dettol is due to :