MDCAT PHYSICS FLP-25 (SMART INSTITUTE)

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MDCAT Physics Quiz - FLP-25

Test your knowledge of physics concepts with our engaging MDCAT Physics Quiz. This quiz consists of 54 carefully curated questions covering various topics in physics, designed to help you prepare for your MDCAT examination.

Key Features:

Multiple choice questions
Covers key physics topics
Scored quiz to track your performance

54 Questions14 MinutesCreated by JumpingPhoton42

123-For step-down transformer Ns...............Np

Equal to

Less than

Greater than

Not equal

124-In series circuit, current remains

Same

Different

Zero

Maximum

125-Identify the de Broglie expression from the following

Lambda=hxp

Lambda=h/p

Lambda=h+p

Lambda=h-p

126-Basically, a potentiometer is a device for

Comparing two voltages

Measuring a current

Comparing two currents

Measuring a voltage

127- Cos = phi/

128-What does the constant N represent in the equation of state for an ideal gas PV=NkT

Number of molecules of gas

Number of moles of the gas

Number of nucleons

Number of protons

129-In a stationary wave, the distance adjacent antinodes is equal to

Lambda

Lambda/2

2 lambda

Lambda/4

130-The presence of dielectric between two charged particles

Reduces the electrostatic force

Increase the electrostatic force

Does not change

Doubles the electrostatic force

131-A temperature of 162 C is equal to what temperature in Kelvins?

-111 K

362 K

435 K

111 K

132-Which element has three isotopes?

None of these

133-If the nuclear radius of Al-27 is 3.6 fm, the approximate nuclear radius of Cu-64 in fermi is

1.2 gm

2.4 fm

3.6 fm

4.8 fm

134-Half wave rectifier use

One diode

Two diode

Three diodes

Four diodes

135-Lasers are produced by

Stimulated emission

Sponataneous emission

Absorption

All of these

136-An electric filament bulb can be worked from

D.C supply only

A.C supply only

Battery supply only

All of these

137-If 110 J heat is added to the system and 40 j work is done, then the amount of work done is

70 j

150 j

190 j

180 j

138-The existence of positron was discovered in the

Thermal radiation

Cosmic radiation

Electromagnetic radiation

Non-electromagnetic radiation

139-An object moves 20 m in 5 sec. What is the gradient of the displacement-time graph

1/4

140-Equal masses of paraffin and water are mixed in a container of negligible thermal capacity. Initial temperature of water is 80 degree celsius and that of paraffin is 20 degree celsius. The final temperature of mixture is:

70 C

60 C

50 C

40 C

141-What happens to the flux if applied magnetic field is doubled on the same surface

Becomes half

Becomes twice

Becomes infinite

Becomes 4 times

142-Under what conditions of temperature and pressure does a real gas approximate to an ideal gas

P=LOW, T=LOW

P=LOW, T=HIGH

P=HIGH, T=LOW

P=HIGH, T=HIGH

143-CENTRIPETAL ACCELERATION ALWAYS ACT AS .....THE CENTER.

Away

Towards

Normally

Tangentially

144-The photon is the particle, which has the ....

Infinite rest mass

Rest mass but no charge

No rest mass and no charge

A & C

145-Calculate the frequency of photon associated with 500 nm wavelength

5 Hz

6 x 10^14 Hz

7 Hz

9 Hz

146-A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the total angular displacement covered is

Pi r

2 pi r

Zero

4 pi

147-Which of the following is the unit of mutual inductance

Vsa

V2sa

V2s

VsA^-1

148-What will happen in a time of 7 hours, if a radioactive substance has an average life of 7 hours

Half of the active nuclei decay

Less half of the active nuclei decay

More than half of the active nuclei decay

All active nuclei decay

149-Ampere's law is [B.dl=

Mew I square

Mew I

Mew/I

I mew square

150-In a standing wave, the distance between a node and consecutive and antinode is

Equal to wavelength

Equal to two wavelength

Equal to half of wavelength

Equal to quarter of wavelength

151-Transistors can be used as

Half wave rectifier

Full wave rectifier

Both

None of these

152-At which angle work done is maximum

45 degree

90 degree

0 degree

180 degree

153-Which of the following blocks will release heat fast?

Rough white surface

Polished white surface

Rough black surface

Polished black surface

154-For clockwise rotations direction of angular velocity is

Positive

Negative

Zero

Infinite

155-An adiabatic change is the one in which

No heat is added to or taken out of a system

No change of temperature takes place

Boyle's law is applicable

Pressure and volume remains constant

156-Which radiation is used in greenhouse effect?

X-rays

Gamma rays

157-What is the unit of potential difference

Volts

Meter

Coulomb

Newton's

158-A capacitor stores charge Q at a potential difference del V. What happens if the voltage applied to the capacitor by a battery is doubled to 2 del V

The capacitance falls to half its initial value, and the charge remains the same

The capacitance and its charge both fall to half their initial values

The capacitance and the charge both double

The capacitance remains the same, and the charge doubles

159-For angular acceleration clockwise rotation means torque to

Positive

Negative

Zero

Infinite

160-Superposition of two waves having same frequency, same amplitude and travellling in the opposite direction , is called

Interference

Diffraction

Beats

Stationary waves

161-The minimum charge on an object cannot be less than

1.6 x 10^19 C

9.1

1.6 X 10^-19 c

162-A full wave rectifier passes.......into positive cycles

Lower half cycle

Upper half cycle

Both cycles

None of these

163-UV radiation is formed by bombarding gas molecules with

Electrons

Protons

Alpha rays

Any of these

164-The role of inductance is equivalent to

Inertia

Force

Energy

Momentum

165-e/m ratio for an electron in electric and magnetic field is

E/m = BrE

E/(B^2r)

E2/rB2

B2/Er

166-A body at temperature T radiates heat according to relation

T-4

NONE OF THESE

167-In a rectifier, larger the value of shunt capacitor filter

Larger the peak -to-peak value of ripple voltage

Larger the peak current in the rectifying diode

Longer the time that current pulse through the diode

Smaller the dc voltage across the load

168-A sound wave has a wavelength of 0.20 m. What iss the phase difference between two points along the wave which are 0.65 m apart?

0.65

169-A 220 V main supply is connected to a resistance of 100 k ohms. The effective current is

2.2 Ma

22/1.44 mA

2.2 X 1.44 mA

NONE

170-Oil droplets of mass m and charge q are dropped between two horizontal parallel plates. Air resistance is negligible. The droplets are fallling at constant velocity when electric field strength between the plates is E. Which of the folllowing is true?

E=0

E=mg/q

E>mg/q

171-The X-ray photon is unacceptable when it is

Emitted

Absorbed

Travelling

All

172-A force F =(0.5x + 10 )N acts on a particle, calculate the work done by the force in displacing particle from x=0 to x=2m

20 j

21 j

22 j

23 j

173-A stationary wave is setup on a string which is fixed at both ends. The frequency of the wave is 400 Hz. If the speed of wave is 480 m/s, then what is the length of the string?

1.2 m

0,84 m

0.60m

0.42m

174-The ionization power of ....ray is highest.

Beta

Gamma

He-Ne laser

None of these

175-Calculate the time taken for the charges to complete the circuit if the total charges were 5000 C and the current of the circuit was 20 A

250 sec

350 sec

400 sec

500 sec

176- Instantaneous velocity for a displacement function d(t)=2-2t at any time is given by

-2t

-2

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MDCAT PHYSICS FLP-25 (SMART INSTITUTE)

MDCAT Physics Quiz - FLP-25

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