0% Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Physics Class 11 This Quiz Contains a Set of 10 Questions. Passing cut-off is 60%. To Start the Quiz... Click on the Start Button. All the Best. 1 / 10 As the temperature increases, the time period of the pendulum: increases as its effective length increases even though its centre of man (CM) still reaming at the centre of the bob decreases as its effective length increases even though its CM still remains at the centre of the bob increases as its effective length increases due to shifting of CM below the centre of the bob decreases as its effective length remains same but the CM shifts above the centre of the bob. 2 / 10 A gas is filled in a container at pressure Po. If the mass of molecules is halved and their r.m.s. speed is doubled. The resultant pressure would be: 2 Po 4 Po Po/2 Po/4 3 / 10 When a body is taken from the poles to the equator on the earth, its weight increases decreases remains same increases at south pole and decreases at north pole 4 / 10 The energy required to move a satellite of mass m from an orbit of radius 2R to 3R is, (M is mass of the earth): GMm12R2 GMm3R2 GMm8R GMm6R 5 / 10 If one moves from the surface of the earth to the moon, what will be the effect on its weight? Weight of the person decreases continuously with height from the surface of the earth. Weight of the person increases with height from the surface of earth. Weight of a person first decreases with height and then increases with height from surface of earth. Weight of person first increases with height and then decreases with height from the surface of earth. 6 / 10 A bomb of mass 30 kg at rest explodes into two pieces of masses 18 kg and 12 kg. The velocity of 18 kg mass is 6 m/s. The kinetic energy of the other mass is: 324 J 486 J 256 J 5245 J 7 / 10 A laser light beamed at the moon. After 2.56 seconds, the beam reflects back to the earth from the surface of the moon. The radius of the lunar orbit is: 3,84,000 km 7,68,000 km 1,92,000 km The information is insufficient. 8 / 10 The frequency of an open organ pipe is ν. If half part of the organ pipe is dipped into water then its frequency is: ν ν/2 ν/4 0 9 / 10 A gas filled in a closed vessel is heated through 1 K and its pressure increases by 0.4%. What was the initial temperature of the gas? 250 K 350 K 450 K 500 K 10 / 10 The root mean square velocity of gas molecules is 10 km/s The gas is heated till its pressure becomes four times. The velocity of gas molecules will be: 10 Km/s 20 Km/s 40 Km/s 80 Km/s Your score is 0% Restart quiz
