Practice mode / 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 Report a problem How we write and check questions
Question 01 / 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 02 / 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
Question 03 / Physics The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least? A Option A: 1120 ft B Option B: 120 ft C Option C: 56 ft D Option D: 100 ft E Option E: None of these Correct answer C. 56 ft Show answer Open question
Question 04 / Physics Which of the following explains the reason why there is no total eclipse of the sun? A Option A: Size of the earth in relation to that of moon B Option B: Orbit of moon around earth C Option C: Direction of rotation of earth around sun D Option D: Area of the sun covered by the moon E Option E: None of these Correct answer D. Area of the sun covered by the moon Show answer Open question
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