Question Detail

The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called

Nuclear fusion
Nuclear fission
Nuclear reaction
Fast breeding

Answer: Option B

1. Alexander Graham Bell invented

Telephone
Telescope
Television
Tank

Answer: Option A

Explanation:

Alexander Graham Bell of USA invented Telephone in 1876,

Telescope was invented by Hans Lippershey of Netherlands in 1608,

Television was invented by John Logie Bared of Scotland in 1926,

Tank was invented by Sir Ernest Swington of England in 1914.

2. Which of the following is an electromagnetic wave ?

Cathode rays
Sound wave
Ultrasonic wave
Infra red rays

Answer: Option D

3. radian per second is unit of

Momentum
Moment of Inertia
Frequency
Angle Velocity

Answer: Option D

Explanation:

unit of Momentum is kilogram meter per second,

unit of Moment of Inertia is kilogram square meter,

unit of frequency is Hertz.

4. The incident ray, reflected ray and normal to the reflecting surface at the incident point all never lie in same plane.

True
False

Answer: Option B

5. Which instrument is used in submarine to see the objects above sea level ?

Pykometer
Polygraph
Photometer
Periscope

Answer: Option D

Explanation:

Pykometer - used to determine the density and coefficient of expansion of liquids,

Polygraph - used to record changes in heartbeat, blood-pressure and respiration,

Photometer - used to compare luminous intensity of the source of light.