Practice mode / Physics In a fission nuclear reaction, a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called? A Option A: Chemical Reaction B Option B: Nuclear reaction C Option C: Fission nuclear reaction D Option D: Fusion nuclear reaction E Option E: None of these Correct answer D. Fusion nuclear reaction Show answer Report a problem How we write and check questions
Question 01 / Physics The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use? A Option A: red waves B Option B: Infrared waves C Option C: Ultrasonic D Option D: super sonic E Option E: None of these Correct answer C. Ultrasonic Show answer Open question
Question 02 / Physics A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be? A Option A: 6 feet B Option B: 12 feet C Option C: 4 feet D Option D: 3 feet E Option E: None of these Correct answer D. 3 feet Show answer Open question
Question 03 / Physics When a ray of sunlight enters a dark room, its straight path become visible because of dust particles hanging in the air. It is because light is? A Option A: Visible B Option B: Transparent C Option C: Invisible D Option D: opaque E Option E: None of these Correct answer A. Visible Show answer Open question
Question 04 / Physics It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the? A Option A: pitch B Option B: Frequency C Option C: Time period D Option D: Quality E Option E: None of these Correct answer A. pitch Show answer Open question
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