A Wire When connected to 220 V mains supply has power dissipation . Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is .Then P1:P2
If in a circular coil A of Radius R, current i is following and in another coil B of radius 2R is current 2i is flowing, then the ratio of the magnetic fields Ba and Bb produce by them will be?
If suddnly the gravitational force of attraction between earth and a satellite revolving around it becomes zero, then satellaite will:
If a body looses half of its velocity on penetrating 3 cm in a wooden block, then how much will it penetrate more before coming to rest?
From a building two balls A and B are thrown such that A is thrown upwards and B is thrown downwards (both vertically). if Va and Vb are their respective velocity on reaching the ground
A ball whoose Kinetic Energy is E, is projected at an angle of 45 degree to the horizontal. The kinetic energy of the ball at the highest point of its flight will be:
The minimum velocity (in ms-I) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction 0.6 to avoid skidding is :
Initial angular velocity of a circular disc of mass M is . Then two small spheres of mass m are attached gently to two diametrically opposite points on the edge of the disc. What is the final angular velocity of the disc?
The part of a transistor which is most heavily doped to produce large number of majority carriers is
If mass-energy equivalence is taken into account, when water is cooled to form ice, the mass of water should :
Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will :
The kinetic energy needed to project a body of mass m from the earth's surface (radius R) to infinity is :
The power factor of an AC circuit having resistance R and inductance L (connected in series) and an angular velocity (r) is:
Length of a string tied to two rigid supports is 40 cm. Maximum length (wavelength in cm) of a stationary wave produced on it, is:
If there are n capacitors in parallel connected to V volt source, then the energy stored is equal to
If No is the original mass of the substance of half-life period t1/2 = 5 years, then the amount of substance left after 15 years is:
If theta I is the inversion temperature, theta n is the neutral temperature, theta c is the temperature of the cold junction then :
Correct the following statements: (a) Surgical methods of contraception prevent gamete formation. (b) All sexually transmitted diseases are completely curable. (c) Oral pills are very popular contraceptives among the rural women. (d) In E. T. techniques, embryos are always transferred into the uterus.
Correct the following statements:
(a) Surgical methods of contraception prevent gamete formation.
(b) All sexually transmitted diseases are completely curable.
(c) Oral pills are very popular contraceptives among the rural women.
(d) In E. T. techniques, embryos are always transferred into the uterus.
(a) Abortions could happen spontaneously too. (True/False)
(b) Infertility is defined as the inability to produce a viable offspring and is always due to abnormalities/defects in the female partner. (True/False)
(c) Complete lactation could help as a natural method of contraception. (True/False)
(d) Creating awareness about sex related aspects is an effective method to improve reproductive health of the people. (True/False)