Why is a cyclist required to bend inwards while moving in a circular path _____.

1. 1. To make the center of gravity fall with the base
   2. To keep the vehicle on the road
   3. To produce the necessary centripetal force required to keep him moving in a curved path
   4. None of these

Tiredness is felt on the top of the mountains because of _____.

1. 1. Low pressure outside the body
   2. Low temperature
   3. High pressure outside the body
   4. High temperature

When a vehicle passes, TV reception gets distorted. This is because of _____.

1. 1. Passing vehicle affects the sophisticated TV components
   2. Metal reflects radio-waves
   3. Spark plug creates electromagnetic disturbances
   4. Modern vehicles use electronic ignition system

A ship rises as it enters the sea from a river because the _____.

1. 1. Density of sea water is lower than that the river water
   2. Density of seat water is higher than that of the river water
   3. Water in sea is hard water
   4. Larger quantity of water in the sea pushes the ship upwards

One should not connect a number of electric appliances to the same power socket because _____

1. 1. The appliances will not get proper current
   2. This can damage the appliances
   3. This can damage the domestic wiring due to overheating
   4. The appliances will not get full voltage

The difference between a nuclear reactor and and atomic bomb is that _____.

1. 1. The chain reaction in nuclear reactor is controlled
   2. No chain reaction takes placed in atomic bomb while it takes place in nuclear reactor
   3. The chain reaction in nuclear reactor is not controlled
   4. No chain reaction takes place in nuclear reaction while in the atomic bomb there is a chain reaction

A person sitting in an open car moving at constant velocity throws a ball vertically upwards in air. If effect of air resistance is neglected, the ball will fall _____.

1. 1. In the car behind the person
   2. Outside the cars
   3. In the car ahead of the person
   4. Exactly in hands of the person

When light passes from air into glass it experiences change in _____.

1. 1. Frequency, wavelength and speed
   2. Wavelength and speed
   3. Frequency and speed
   4. Frequency and wavelength

A bomb is dropped at a point from a moving aeroplane. the pilot observes that _____.

1. 1. The bomb drops vertically downward
   2. The bomb remains stationary in the air for some time
   3. The bomb traverses a curved path and falls some distance ahead
   4. The bomb  traverses a curved path and falls some distance behind that point

Kinetic energy depends _____.

1. 1. Both mass and velocity of the moving body
   2. The velocity or speed of the moving body
   3. On the mass  of the moving body
   4. Pressure of the moving body