Physics-Objective Related Question Answers
1226. The rays that come from sun and other stars are called?
Cosmic rays
1227. Sun and other stars exist in the state of?
Plasma
1228. It is difficult to cook at high altitudes because of?
Decrease in boiling point of water
1229. If the door of a refrigerator is kept open with the main supply, the temperature of the room?
Increases
1230. Hygrometer is used for measuring?
Amount of water vapour in air
1231. A cold bottle is taken from a refrigerator and weighed. As time progresses we will find?
the bottle slightly gains weight
1232. Which has the longest wavelength?
Radio waves
1233. Which waves are used for telecommunication through artificial satellites?
Microwaves
1234. What increases with the increase of the penetrating power of X-rays?
Frequency
1235. What are X-rays?
They are electromagnetic radiation
1236. A simple pendulum is set up inside a lift. The period of oscillations is maximum when the lift is:?
Moving downward with acceleration
1237. How will the period of oscillation of simple pendulum be affected if it is moved from the surface of earth to a mine?
It will increase
1238. Two bullets are fired horizontally with different velocities from the same height. Which will reach the ground first?
Both will reach simultaneously
1239. A particle moves in a plane with a constant acceleration in a direction different from the initial velocity. The path of the particle is?
Parabola energy into mechanical energy
1240. Magnetism at the centre of the bar magnet is?
zero
1241. Fuses are connected in ......... to the live wire?
series
1242. When seen in blue light a red rose will appear as?
black
1243. A steam engine convert heat energy into?
mechanical energy
1244. A person climbing a hill bends forward inorder to?
increase stability
1245. Winding a watch is actually the process of storing?
potential energy
1246. Pitch of a sound depends upon its?
frequency
1247. Radiocarbon is produced in the atmosphere as a result of?
collision between fast neutrons and nitrogen nuclei present in the atmosphere
1248. It is easier to roll a stone up a sloping road than to lift it vertical upwards because?
work done in rolling a stone is less than in lifting it
1249. The absorption of ink by blotting paper involves?
capillary action phenomenon
1250. Siphon will fail to work if?
the level of the liquid in the two vessels are at the same height
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions
Question ANSWER With Solution