150+ Physics MCQs (Important for Punjab & Haryana High Court Exam)

Q-1 A cold soft drink is kept on balance. When the cap is opened, then the weight
(a) increases
(b) decreases
(c) first increase then decrease
(d) remains same

Q-2 When a red glass is heated in dark room it will seem
(a) black
(b) green
(c) yellow
(d) red

Q-3 How is the pressure cooker work?
(a) Heat cannot escape from the cooker
(b) Low pressure inside the cooker rises the boiling point of water
(c) High pressure inside the cooker rises the boiling point of water
(d) Steam inside the cooker makes food to cook with ease

Q-4 Which of the Following is/ are the unit of energy?
I. Calorie
II. Joule
III. Electric-volt
IV. Watt
Select the answer by using the codes given below?
(a) I, II, III and IV
(b) I, II and III-
(c) II III and IV
(d) Only IV

Q-5 A body lying at rest suddenly breaks into two parts of equal masses which starts moving. The parts will move in 
(a) opposite direction with equal speed
(b) opposite direction with unequal speed
(c) any direction with equal speed
(d) same direction with equal speed

Q-6 The most familiar form of radiant energy in sunlight that cause tanning and has the potential for causing melanoma in humans is called
(a) infra-red radiation
(b) visible radiation
(c) ultra-violet radiation
(d) microwave radiation

Q-7 Which one of the following planets is said to be “twin sister” of the Earth?
(a) Mercury
(b) Venus
(c) Mars
(d) Jupiter

Q-8 Which one among the following satellites is used to reflect the radio-signals back to the Earth?
(a) Natural satellite
(b) Active satellite
(c) Passive satellite
(d) None of these

Q-9 Consider the following statements.
I. Atom bomb is based upon the principle of uncontrolled nuclear fusion.
II. Hydrogen bomb is based upon the principle of uncontrolled nuclear fusion.
III. Nuclear reactor is based upon the principle of uncontrolled nuclear fusion.
Which of the statements given above is/are correct?
(a) I, II and III
(b) I and III
(c) II and III
(d) Only II

Q-10 A coin immersed in water pond appears to be raised when view from the top. What is this due to?
(a) Total internal reflection of light
(b) Refraction of light
(c) Scattering of light
(d) Reflection of light

Q-11 Telescopes are placed in space to view distant galaxies primarily to
(a) get closer to the observed objects
(b) avoid the absorption of light or other radiations in the atmosphere of the Earth
(c) avoid light pollution from the Earth’s populated areas
(d) avoid steering the telescope against the Earth’s motion

Q-12 The phenomenon of bursting of hydrogen balloon is based on
(a) Charle’s law
(b) Boyle’s law
(c) Henry’s law
(d) Bernoulli’s theorem

Q-13 A solid sphere, disc and solid cylinder all of same mass and made of same material are allowed to roll down (from rest) on incline plane then
(a) disc will reach the bottom first
(b) solid sphere will reach the bottom first
(c) solid cylinder will reach the bottom first
(d) all of them will reach the bottom at the same time

Q-14 Who among the following gave the first experimental value of G?
(a) Cavendish
(b) Brook Taylor
(c) Copernicus
(d) Albert Einstein

Q-15 Why is the machine function well with lubricant?
(a) Because of surface tension of the lubricant
(b) Because of viscosity of the lubricant
(c) Lubricant removes moisture
(d) Lubricant induces inertia of machine

Q-16 Arrange the following electromagnetic waves according to their decreasing energy and select the correct answer
(a) IR, UV-rays, X-rays, y-rays
(b) y-rays, X-rays, UV-rays, IR
(c) y-rays, UV-rays , X-rays, IR
(d) IR, y-rays, UV-rays, X-rays

Q-17 If there were no gravity, which of the following will not be there for a fluid?
(a) Viscosity
(b) Pressure
(c) Archimede’s upward thrust
(d) Surface tension

Q-18 During wind storm, the roofs of houses covered with Gl Sheets may be blown off because
(a) Wind creates low pressure over the roof
(b) Wind creates high pressure over the roof
(c) Roofs are not tightly bound
(d) None of the above

Q-19 In nuclear reaction which one of the following is conserved?
(a) Atomic number
(b) Mass number
(c) Atomic number, mass number and energy
(d) None of the above

Q-20 Consider the following materials
I. Bronze
II. Graphite
III.Dirty water
IV. Concrete
Which of the following materials given above are conductors?
(a) I, II, III and IV
(b) I, II and III
(c) II and III
(d) II and IV

Q-21 Who gave the first evidence of Big-bang theory?
(a) Edwin Hubble
(b) Stephen Hawking
(c) S Chandrasekhar
(d) Albert Einstein

Q-21 Which one of the following will have the maximum cohesive force?
(a) Liquid
(b) Gas
(c) Fluid
(d) Solid

Q-22 Consider the following statements
I.If cyan and yellow coloured circles are intersected, the intersected area will have green.
II.If red and green coloured circles intersect, the intersected will have magenta.
Which of the statements given above is/are correct?
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II

Q-23 A planet is moving around the sun in an elliptical orbit. Its speed is 
(a) Same at all points of the orbit
(b) Maximum when it is farthest from the sun
(c) Maximum when it is nearest to the sun
(d) None of the above

Q-24 Which of the following are electromagnetic waves?
I. X-rays II. Visible light III. IR-rays IV. Alpha rays
Select the correct answer using the codes given below
(a) I, II, III and IV
(b) I, II and III
(c) II and III
(d) II and IV

Q-25 The temperature of a body is an indicator of
(a) average kinetic energy of the molecules of body
(b) the total velocity of the molecules of body
(c) the total potential energy of the molecules of body
(d) average total energy of the molecules of body

Q-26 Which one among the following rays has minimum wavelength?
(a) Cosmic rays
(b) Gamma rays
(c) X-rays
(d) Ultra-violet rays

Q-27 Which of the following statements is/are true?
1. The angle of the axis in relation to the planer in which the earth revolves around the sun is not constant.
2. The amount of energy given off by the sun changes with the transparency of the atmosphere. Select the correct answer using the codes given below
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2

Q-28 Select the correct statement from the following
I.Radioactive decay obeys the law of exponential.
II.Electrons orbiting the nucleus are responsible for the radioactivity.
III.Half life period is greater than mean life period.
IV.After disintegration radiocarbon is converted to C-14.
Select the correct answer using the codes given below
(a) I, II, III and IV
(b) I, II and III
(c) I and III
(d) I and IV

Q-29 By which one of the following, an old written material which cannot be read easily, can be read?
(a) a- rays
(b) y- rays
(c) X-rays
(d) IR- rays

Q-30 Which one of the following is not an amorphous substance?
(a) Glass
(b) Polymer
(c) Rubber
(d) Copper

Q-31 A person standing at the middle point of a wooden ladder which starts slipping between a vertical wall and the floor of a room, While continuing to remain in a vertical plane. The path traced by a person standing at the middle point of the slipping ladder is
(a) a straight line
(b) a elliptical line
(c) a circular path
(d) a parabolic path

Q-32 Which of the factors given below is/are responsible for the weightlessness while orbiting the Earth, in space?
I. Acceleration
II. Zero gravity
Select the correct answer using the codes
(a) Only I
(b) Only II
(c) Both I and II
(d) Neither I nor II

Q-33 An objects is placed at the focus of a concave mirror. The image will be
(a)Real, inverted, same size at the focus
(b)Real, upright, same size at the focus
(c)Virtual, inverted, highly enlarged infinity
(d)Real, inverted, highly enlarged at infinity

Q-34 When a horse pulls a cart, the force that makes the horse run forward is the force exerted by
(a) the horse on the ground
(b) the ground on the horse
(c) the horse on the cart
(d) the ground on the cart

Q-35 If two conducting spheres are separately charged and then brought in contact
(a) the total energy of the two spheres is conserved
(b) the total energy on the two spheres is conserved
(c) both the total charge and the total charge are conserved
(d) the final potential is always the mean of the original potential of the two spheres

Q-36 If we move from equator to pole, the value of g
(a) increases
(b) decreases
(c) remains same
(d) first increases then decreases

Q-37 Which one of the following is the weakest force?
(a) Gravitational force
(b) Electromagnetic force
(c) Nuclear force
(d) Electrostatic force

Q-38 Cavitation is a special application property exhibited only by
(a) Audible sound
(b) Infrasonic
(c) Ultrasonic
(d) Electromagnetic waves

Q-39 Cryogenic engines find application in
(a) washing machine
(b) frost free refrigerator
(c) rocket technology
(d) sub-marine propulsion

Q-40 A liquid is kept in a regular cylindrical vessel up to a certain height. If this vessel is replaced by another cylindrical vessel having half the area of cross-section of the bottom, the pressure on the bottom will
(a) remain unaffected
(b) be reduced to half the earlier pressure
(c) be increase to twice the earlier pressure
(d) be reduced to one-fourth the earlier pressure