A. Water molecules absorb all other colors except blue
B. Impurities in Sea water reflect the blue light
C. Water molecules scatter the blue light
D. None of the above
✅ The correct answer is option C.
The Helium atoms that have lost two electrons are called ________?
A. Alpha rays
B. Beta rays
C. Gamma rays
D. None of the above
✅ The correct answer is option A.
What is the approximate height of a Geostationary satellite ?
A. 981 km
B. 15000 kms
C. 35000 kms
D. 5000 kms
✅ The correct answer is option C.
The inability of a body to change its state of rest or its uniform motion in a straight line is called as ________?
A. Mass
B. weight
C. Inertia
D. Friction
✅ The correct answer is option C.
Ohm is a unit of measuring _________?
A. Resistance
B. Voltage
C. Current
D. None of the above
✅ The correct answer is option A.
Equal volumes of all gases contain equal number of molecules under similar conditions of temperature and pressure. Which law says this ?
A. Boyle‘s law
B. Charles law
C. Avogadro‘s Law
D. Bhor‘s law
✅ The correct answer is option C.
Which among the following is a property of Insulator?
A. The electrons of the outer orbits are loosely bound to the nucleus , however can not flow through them
B. The electrons of the outer orbits are tightly bound to the nucleus and can not flow through them
C. The electrons of the outer orbits are loosely bound to the nucleus , and can flow through them
D. None of the above
✅ The correct answer is option B.
Which among the following is true about latent heat ?
A. It causes change in temperature as well as change in state or phase
B. It causes change in temperature only
C. It causes change in state or phase but not in temperature
D. It causes change in Pressure
✅ The correct answer is option C.
When light from some sources enters to the earth‘s atmosphere, it gets scattered. Which among the following is a reason behind scattering?
A. Various wavelengths of light
B. dust, smoke and gas molecules
C. atmospheric pressure
D. None of the above
✅ The correct answer is option B.
Which among the following is true about Total Internal Reflection?
A. A ray passing from rarer to denser medium and not able to pass to denser medium at an angle greater than critical angle
B. A ray passing from denser to rarer medium and not able to pass to rarer medium at an angle greater than critical angle
C. A ray passing from either denser to rarer medium or rarer to denser medium and not able to pass any medium at an angle smaller than critical angle
D. None of the above
✅ The correct answer is option B.