MCQ
Bats use this technique to detect their prey and hunt them...... .
- Aflapping their wings
- Becho
- Creflection of sound waves
- ✓both (b) and (c)
✓
Answer
Correct option: D.
both (b) and (c)
(d)
both (b) and (c)
Explanation:
Bats can produce and detect high frequency sound waves of about 100 kHz that does not lie in human audible range. These waves are used to locate obstacle at right. These sound waves strike any obstacle in their path and are reflected as echoes to the bat's ear.
both (b) and (c)
Explanation:
Bats can produce and detect high frequency sound waves of about 100 kHz that does not lie in human audible range. These waves are used to locate obstacle at right. These sound waves strike any obstacle in their path and are reflected as echoes to the bat's ear.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
By using Fleming's right hand rule we can indicate the ______________ .
Which of the following graph shows the condition for damped vibration.
In an electric cell while in use, the change in energy is from
The weight of half meter scale balanced at 5 cm mark when a weight of 10 gf is suspended at one of its ends is:
A copper wire has the length of 369.4 m and radius of 1 mm . If the resistance of the wire is 2 ohm , what is its resistivity?
Make the correct choice in each of the following:
(a) In what unit is the specific heat capacity expressed?
(a) In what unit is the specific heat capacity expressed?
Match the following:
| Column I | Column II |
| (i) Cathode ray tube in TV | 1.6 V |
| (ii) Household mains | 2.220 V |
| (iii) Door bell | 3. 11,000 V |
The safe current that can be pass through a bulb of $210 V, 3000 W$ is _________ .
→In an oscillating pendulum the __________ energy is maximum at extremes.