1.
Escape velocity on a planet of mass M and radius R is:
2.
A convex mirror always forms:
3.
Efficiency of Carnot engine working between 500 K and 300 K:
4.
Zeroth law of thermodynamics defines:
5.
The orbital speed of satellite is independent of:
6.
Value of g is maximum at:
7.
Gravitational force between two point masses is:
8.
A gas undergoes adiabatic expansion. Which of the following is true?
9.
Two lenses of focal lengths +15 cm and –10 cm are in contact. Equivalent focal length is:
10.
Weightlessness in a satellite occurs because:
11.
If Earth shrinks to half its radius without mass change, g on surface becomes:
12.
In adiabatic compression, the temperature of a gas:
13.
The efficiency of Carnot engine increases if:
14.
Power of a concave lens of focal length 50 cm is:
15.
In a concave mirror, image is virtual, erect, and larger than object. The object is placed:
16.
Specific heat at constant pressure (Cp) is always ___ than at constant volume (Cv):
17.
A geostationary satellite has a time period of:
18.
Critical angle for glass (μ = 1.5) in air is:
19.
In an isothermal process, the internal energy change is:
20.
The angular width of central maximum in single slit diffraction is:
21.
Total internal reflection occurs when light:
22.
A convex lens has focal length 20 cm. When object is placed 30 cm in front, image is:
23.
In an isochoric process:
24.
The relation between orbital speed v and escape velocity ve is:
25.
Which law is violated when heat flows from cold to hot body naturally?
26.
Work done in a cyclic process is equal to:
27.
For a reversible isothermal expansion of an ideal gas:
28.
A ray of light passes from glass (μ = 1.5) to water (μ = 1.33). What happens?
29.
Image formed by plane mirror is:
30.
If a satellite’s total mechanical energy is E, its potential energy is:
31.
A prism deviates light because of:
32.
A satellite in circular orbit has kinetic energy:
34.
The time period of a satellite orbiting close to Earth’s surface depends on:
35.
An object is placed at 2f in convex lens. The image is:
36.
In a thermodynamic process, 600 J of heat is supplied and 200 J of work is done by gas. Change in internal energy?
37.
Two wavelengths λ₁ and λ₂ are used in Young’s experiment. Fringe width:
38.
One mole of ideal gas is compressed isothermally from V to V/2. Work done is:
39.
A person can see distant objects clearly but not near ones. He has:
40.
First law of thermodynamics is a statement of conservation of:
41.
A satellite moves in circular orbit around Earth. Work done by gravitational force is:
42.
The refractive index of a medium is 2. What is speed of light in it? (c = 3 × 10⁸ m/s)
43.
Gravitational potential energy of a body of mass m at height h from Earth's surface is:
44.
Acceleration due to gravity at depth d is:
45.
An ideal gas has Cp – Cv = R. This implies:
