1
JEE Main 2022 (Online) 26th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The variation of acceleration due to gravity (g) with distance (r) from the center of the earth is correctly represented by :

(Given R = radius of earth)

A
JEE Main 2022 (Online) 26th June Morning Shift Physics - Gravitation Question 67 English Option 1
B
JEE Main 2022 (Online) 26th June Morning Shift Physics - Gravitation Question 67 English Option 2
C
JEE Main 2022 (Online) 26th June Morning Shift Physics - Gravitation Question 67 English Option 3
D
JEE Main 2022 (Online) 26th June Morning Shift Physics - Gravitation Question 67 English Option 4
2
JEE Main 2022 (Online) 26th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

The efficiency of a Carnot's engine, working between steam point and ice point, will be :

A
26.81%
B
37.81%
C
47.81%
D
57.81%
3
JEE Main 2022 (Online) 26th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Time period of a simple pendulum in a stationary lift is 'T'. If the lift accelerates with $${g \over 6}$$ vertically upwards then the time period will be :

(Where g = acceleration due to gravity)

A
$$\sqrt {{6 \over 5}} T$$
B
$$\sqrt {{5 \over 6}} T$$
C
$$\sqrt {{6 \over 7}} T$$
D
$$\sqrt {{7 \over 6}} T$$
4
JEE Main 2022 (Online) 26th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A thermally insulated vessel contains an ideal gas of molecular mass M and ratio of specific heats 1.4. Vessel is moving with speed v and is suddenly brought to rest. Assuming no heat is lost to the surrounding and vessel temperature of the gas increases by :

(R = universal gas constant)

A
$${{M{v^2}} \over {7R}}$$
B
$${{M{v^2}} \over {5R}}$$
C
2$${{M{v^2}} \over {7R}}$$
D
7$${{M{v^2}} \over {5R}}$$
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